A motorcycle is stopped by a traffic enforcer at an intersection. It then travels along a straight road so that its distance from the traffic enforcer is given by" car on the interval t=0 s to t=8 s. x = rt² - jt³ r= 2.40 = 0.120 Calculate the average velocity of the where and

A motorcycle is stopped by a traffic enforcer at an intersection. It then travels along a straight road so that its distance from the traffic enforcer is given by" car on the interval t=0 s to t=8 s. x = rt² - jt³ r= 2.40 = 0.120 Calculate the average velocity of the where and

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 42PE: Calculate the displacement and velocity at times of (a) 0.500, (b) 1.00, (c) 1.50, (d) 2.00, and (e)...

See similar textbooks

Related questions

Q: Angelito is driving at 6.0 m/s when a traffic enforcer signals that he should speed upm He then…

A: Determine the distance traveled in reaction time.

Q: If you are undergoing constant acceleration, which of the following may be true? OA Your average…

A: The equation of motion is given by, X1=ut1+12×at21 X2=ut2+12×at22 The average velocity is given by,…

Q: A stone is thrown vertically upward with an initial speed of 20 m/s. When it returns, it fall into a…

A: The initial velocity of the stone, v = 20 m/s The initial position of the stone can be considered…

Q: The acceleration of a particle moving along a straight line is a = √s, where s is in meters. If its…

Q: A motorcyclist heading east through a small town accelerates at a constant 4.0 m/s after he leaves…

Q: A train travels with a constant speed of 20.0m/s for 7.00s. Determine all unknowns and answer the…

Q: A bullet is fired at an angle of 60 degrees with an initial velocity od 200.0 m/s . How long is the…

Q: a car is traveling west at 22.5 m/s when it turns due south and accelerates to 40.0 m/s, all during…

A: Given data: Initial velocity (Vi) = 22.5 m/s, towards west Final velocity (Vf) = 40.0 m/s, towards…

Q: A person takes a trip, driving with a constant speed of 91.0 km/h except for a 22.0 min rest stop.…

A: The average speed is given by, vavg=Total distancetotal time =v1t1+v2t2t1+t2 Given : The person…

Q: A ball is thrown directly downward with an initial speed of 8.40 m/s, from a height of 30.4 m. After…

A: v2=u2+2gd=8.40 m/s2+29.8 m/s230.4 m=10.9 m2/s2+595.8 m2/s2v=24.6 m/s

Q: An acceleration of a = k3 t? + ct, is present in a particle traveling in a straight line that starts…

A: Given Data: The acceleration is, a=k3t2+ct The constants are, k=8 m/s4, c=-2 m/s3. The time is, t =…

Q: Is it possible for object given below criteria? a. Acceleration, velocity and displacement all…

A: A) it is only possible if acceleration, velocity and displacement all are zero....else it is not…

Q: I need help with 3-4 6 8

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Determine the magnitude of acceleration of the object when time t = 4 seconds.

A: Scenario - Initially Particle has constant velocity then decelerates with time. Data used from…

Q: First, you will investigate purely vertical motion. The kinematics equation for vertical motion…

Q: A particle moves along a straight line such that its acceleration is a = (4t? - 2) m/s, where t is…

A: Given : Acceleration (a) is (4t² - 2) m/s²

Q: A ball is thrown directly downward with an initial speed of 7.25 m/s, from a height of 29.2 m. After…

A: d=ut+0.5gt2

Q: Assume that an intercontinental ballistic missile goes from rest to a suborbital speed of 6.50 Km/s…

A: Given data: Initial velocity (V0) = 0 m/s, rest Final velocity (V) = 6.50 km/s = 6500 m/s Time (t)…

Q: A car travling with the initial velocity of 50 m/s and reach a distance 200 m in 8 sec find the…

Q: Determine the stopping distances for an automobile with an initial speed of 95 km/h and human…

A: u = 95 km/ h = 95×1000/3600 m/s = 26.89 m/s

Q: A car travels in a straight line along a road. Its distance x from a stop sign is given as a…

A: Given: The distance as a function of t, xt=αt2-βt3, where α=2.25 m/s2 and β=0.0550 m/s2; and time…

Q: A car is 200 m from a stop sign and traveling toward the sign at 40.0 m/s. At this time, the driver…

Q: At 3:00 P.M., a bank robber is spotted driving north on I-15 at milepost 100. His speed is 146.0…

A: The displacement of the bank robber can be determined as follows.

Q: A body moves along a straight line so that its displacement from a fixed point on the line is given…

Q: and a truck are traveling in along a straight road as shown in the time t =0 their positions and…

A: Above problem can be solved using three equation of motion v = u + at.v² = u² + 2as.s = ut + ½at²

Q: A body moves on a coordinate line such that it has a position ? = ?(?) = t^2− 6? + 5 on the interval…

A: Given :s = f(t) = t2 - 6t + 5 in the interval [0,7]

Q: A rocket-driven sled running on a straight, level track is used to investigate the effects of large…

Q: When distance is 0.80 m and average time is 450 ms, what is the accel

A: Given:- Distance d = 0.80m The average Time t = 450 ms =0.450 sec Find :- The acceleration ?

Q: A truck is traveling at a certain speed on a straight-level road. The breaks were suddenly applied…

A: Given that, The motion of the truck can now be approximated by s =t3100-t2+17t

Q: The velocity of a particle traveling in a straight line is given v= bt + cr². If s = 0 when t = 0,…

A: SOlution: Given that v = bt + ct2 b =6 m/s2 c=-3 m/s, t0 = 0s, t1 = 3

Q: A car, moving to the left in a straight line in the negative x-direction, travels a distance d=17 m…

A: YES The distance travelled by the car in the negative x direction is d =17 m in time interval of t…

Q: A jetliner, traveling northward, is landing with a speed of 57.5 m/s. Once the jet touches down, it…

Q: The acceleration of a particle moving along a straight line is a = Vs, where s is in meters. If its…

Q: The acceleration of a dropped object is given by a = -9.8 m/s². If the object has no initial…

A: Given: Acceleration a=-9.8 m/s2 initial velocity u=0 initial height s(t=0)=200 m To find: Position…

Q: A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a…

A: Given: function of time = at2-bt3 a = 1.5 m/s2 b = 0.05 m/s3

Q: A football player runs from his own goal line to the opposing team's goal line, returning to his…

Q: A jetliner, traveling northward, is landing with a speed of 60.4 m/s. Once the jet touches down, it…

Q: A car is traveling at 55 mi/hr when the driver sees a deer in the road 170 feet ahead. The driver…

A: Given Data: Speed of car is u = 55 mi/hr. Distance of deer from car is x = 170 ft. The deceleration…

Q: A car, moving to the left in a straight line in the negative x-direction, travels a distance d = 32…

Q: A football player runs from his own goal line to the opposing team's goal line, returning to his…

A: The problem relates to an American Football field.Consider that the football player in the problem…

Q: To stop a car, first you require a certain reaction time to begin braking; then the car slows at a…

Q: Q2 : Att = 0 bullet A is fired vertically with an intial velocity of 450 m/s when t = 3 seconds.…

A: When a body is projected with a certain velocity, then it will have a certain displacement. The…

Q: suppose that a car traveling to the west (-x direction) begins to slow down as it approaches a…

A: The acceleration is states that the rate of change of velocity, if a driver slowing down to stop at…

Q: A jetliner, traveling northward, is landing with a speed of 81.2 m/s. Once the jet touches down, it…

Q: A rocket-driven sled running on a straight, level track is used to investigate the effects of large…

A: Given Initial speed u=0m/s Final speed v=1620km/h=450m/s Time t=2.20 s

Q: particle is given by The velocity of a the relation [V = 2+0:2x]. knowing that (Xo =0). Determine :…

A: The equation for velocity is given. We need to find the equation for acceleration as well as…

Q: - 5) Ajet plane is flying at constant altitude At time t,=0, it has components of velocity Vx=90 m/s…

Q: A speeding car is traveling at a constant 30.0 m/s when it passes a stationary police car. If the…

A: The expression for find time is t+1=dvt=dv-1 Substitute values in the above equation t=300 m30…

Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

Part A
r = 2.40 "
where
j= 0.120 Calculate the average velocity of the
2 and
x = rt² – jt3
A motorcycle is stopped by a traffic enforcer at an intersection. It then travels along a straight road so that its distance from the traffic enforcer is given by
car on the interval t=0 s to t=8 s.
O 18.24 m/s
O 11.20 m/s
O 11,52 m/s
O 15.62 m/s
Submit
Request Answer

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A car, moving to the left in a straight line in the negative x-direction, travels a distance d=17 m during the time interval deltat = 19.5 s. In this case, must there be an instant at which the speed of the car is equal to its average speed? Answer choices are: No, Cannot Determine, or Yes.
A jetliner travelling northward is landing with a speed of 69m/s . Once the jet touches down it has 750 m of runway in which to reduce its speed to 6.1m/s. Calculate the average acceleration of the plane during the landing . And IF identical pellet guns are fired simultaneously from the edge of a cliff. These guns impart an initial speed of 30.0m/s to each pellet. Gun A is fired straight upwards, with the pellet going up and the n falling back down, eventually hitting the ground beneath the cliff. Gun B is fired straight downwards. In the absence of air resistance, Calculate how long after pellet B hits the ground does pellet A hit the ground?
An unsuspecting bird is coasting along in an easterly direction at 2.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2 . If the wind's acceleration lasts for 3.40 s , find the magnitude ? and direction ?(measured counterclockwise from the easterly direction) of the bird's displacement over this time interval. Assume that the bird is originally travelling in the +? direction and that there are 1609 m in 1 mi . r=3.499m ?= 27.71∘ Now, assume the same bird is moving along again at 2.00 mph in an easterly direction, but this time, the acceleration given by the wind is at a ?=37.0° angle to the original direction of motion, measured counterclockwise from the easterly direction. If the magnitude of the acceleration is 0.300 m/s2 , find the displacement vector ?⃗ and the angle of the displacement ?1 . Enter the components of the vector, ?? and ?? , and the angle. Assume the time interval is still 3.40 s . ?⃗=???̂+???̂
An egg drops from a second-story window, taking 1.24s to fall and reaching a speed of 12.2m/s just before hitting the ground. On contact with the ground, the egg stops completely in 0.131s. Calculate the average magnitude of its acceleration while falling, and then the average magnitude of its acceleration while stopping.
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 175 mi/h in 2.50 s. (a) Find the average acceleration of the plane. (b) Assuming the acceleration is constant, find the distance the plane moves.
a car is traveling west at 22.5 m/s when it turns due south and accelerates to 40.0 m/s, all during a time of 4.00s. calculate the magnitude of the car's average acceleration ( in m/s^2).
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 185 mi/h in 3.00 s. what is the acceleration (m/s^2) and the distance the plane moves assuming constant acceleration.
Near the end of a marathon race, the first two runners are separated by a distance of 65.0 m. The front runner has a velocity of 3.25 m/s, and the second runner has a velocity of 4.75 m/s. What is the magnitude of the velocity of the second runner relative to the first? velocity of the second runner relative to the first: ? If the front runner is 215 m from the finish line, who will win the race, assuming both runners run at constant velocity? a) front runner b) Both runners cross the finish line at the same time. c) second runner By what distance does the winning runner finish ahead of the next runner? distance: ?
A skateboarder travels on a horizontal surface with an initial velocity of 4.4 m/sm/s toward the south and a constant acceleration of 2.6 m/s2m/s2 toward the east. Let the xx direction be eastward and the yy direction be northward, and let the skateboarder be at the origin at t=0t=0. 1. What is her y position at t=0.90s? Express your answer to two significant figures and include appropriate units.
A truck traveling along a straight, level road at 45 miles per hour when the driver is forced to apply the brakes to avoid an accident. If the brakes supply a constant deceleration of 22 ft/s2, determine: the expressions for the truck’s velocity v and position c at anytime t how long will it take to stop? how far does the car travel before coming to a complete stop?
If a ball is thrown straight up into the air with an initial velocity of 70 ft/s, it height in feet after ? second is given by y=70t−16t^2. Find the average velocity for the time period begining when t=2 and lasting 0.1 seconds = 0.01 seconds= 0.001 seconds= Finally based on the above results, guess what the instantaneous velocity of the ball is when ?=2.
At 3:00 P.M., a bank robber is spotted driving north on I-15 at milepost 139. His speed is 146.0 mi/h. At 3:37 P.M., he is spotted at milepost 182 doing 104.0 mi/h. (Assume a straight highway). Assume north to be positive. What is the bank robber’s displacement and average velocity during this time interval?