Which of the following is not true about Deceleration a) for an object moving to the right along the positive x axis and slowing down, acceleration is negative d) we have deceleration whenever the magnitude of the velocity is decreasing O b) Velocity and acceleration always point in the same direction c) an object moving to the left along the negative x axis and slowing , acceleration is positive d) we have deceleration whenever the magnitude of the velocity is decreasing

Q: . Average Speed of a Vehicle The average speed of a vehicle in miles per hour on a stretch of Route…

A:

Q: A UFO experienced a constant acceleration of 7 m/s2 east for 94 s and was going 676 m/s east at the…

A:

Q: The magnitude of average velocity is always less than or equal to the average speed. Explain why?

A: Let us assume point A and B and with a straight line joining both of them separated by d distance.

Q: Make a motion chart for a cannonball launched with an initial speed of 20m/s. Neglect drag and the…

A: The cannonball is launched with intial velocity u = 20 m/s The gravitational acceleration g = 9.8…

Q: Two trains, one traveling at 72.0 km/h and the other at 144 km/h, are headed toward one another…

A: Given data:  For train 1 Initial velocity (Vi) = 72.0 km/h = 20.0 m/s For train 2  Initial velocity…

Q: Assume that the brakes in your car result in a constant deceleration of magnitude a, which is…

A: Let the initial and final velocities of the car be denoted as u1 and v. Use the third kinematic…

Q: Solve by the analytical method and graphical method Determine the speed that a boy will have on…

A: Apply the first kinematic equation and substitute the required values to determine the final speed…

Q: car is travelling at a constant speed of 80kmph. How many kilometres will the car cover if it keeps…

A: Given  Speed = v = 80 km/h Total time t = 3 h. 15 min          t = 13/4 hr  Speed =distance /time

Q: A car is traveling east at 20.5 m/s when it turns north and accelerates to 32.0 m/s, all during a…

A: Initial velocity (v→) = 20.5 i^ msfinal velocity (V'→) = 32 j^ ms

Q: A car from rest moves with a constant velocity of 60 km/h for 2 hours. The driver then decided to…

A: Given:-  A car start from the rest and moves with the constant speed of v1 = 60 km/h for a time t1 =…

Q: A car is travelling at 30.0 m s'' when the driver needs to stop suddenly. If the driver takes 0.250…

A: Given data:  Initial velocity (V0) = 30.0 m/s Reaction time (t0) = 0.250 s Acceleration (a) = -8.00…

Q: A car is initially moving in the +x direction at 14.0 m/s. The car makes a turn so that 3.00 seconds…

A: u = 14i m/s , v= 18j m/s  t= 3s

Q: 11. You start from your house at 10:00am, goes to the grocery shop and then to your friend's house.…

A:

Q: Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest,…

A: Given: initial velocity, u = 444 m/s final velocity,v = 0 m/s  time,t = 2.15 s

Q: Read the following statements related to the concept of acceleration: 1. Describe the change in…

A: Acceleration -  Acceleration of an object is defined as the rate of change in velocity (both speed…

Q: A train accelerates uniformly from rest at station A to a maximum speed of 72 km/h. The constant…

A: Using the kinematic equation, for the accelerating part the final velocity v=u+at   Substitute, 20…

Q: Carl is eating lunch at his favorite cafe when his friend Isaac calls and says he wants to meet him.…

A:

Q: Two cars are heading towards one another. Car A is moving with an acceleration of aA = 3 m/s2. Car B…

A:

Q: Cars A and B approached each other on a straight road from points 460 m apart. A has an initial…

A: Let x is the distance covered by the car A . Then the at the point of meet the equation of motion of…

Q: Read the following statements related to the concept of acceleration: I. Describe the change in…

A: Given :- Different statements related to concept of acceleration .

Q: A vehicle travel at 16 m/s and passes a pedestrian where in the speed limit is 15 m/s. While vehicle…

A: Given: The speed of the vehicle: v1=16 m/s The acceleration of the enforcer: a2=9 m/s2

Q: The table below shows data (position or velocity) for 8 different objects. Let south be the positive…

A: 1. If the acceleration of an object is positive , it will speed up in positive direction or it will…

Q: True or False: The instantaneous value of a velocity vs. time graph is the slope of the…

A: so, consider a graph between velocity vs time graph

Q: Question 3 or motion with constant, non-zero motion, sometimes objects slow down, stop momentarily,…

A: Turning point for an object motion is the point where object change its direction of Motion and it…

Q: A bullet is fired through a board 10.0 cm thick in such a waythat the bullet’s line of motion is…

A: (a) Write the kinematic relation initial velocity, final velocity acceleration and distance…

Q: A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed…

A:

Q: 2. Complete the table below. Based on the given motions, give the distance traveled and the object's…

A: We know that the distance is the total path covered by the object while the displacement is the…

Q: During a one-hour boat trip, a group of visitors traveled 50.0 km north and then traveled 70.0 km…

A: duration of trip (t) = 1 hour d1 = 50 km due north d2 = 70 km east

Q: The table below shows data (position or velocity) for 8 different objects. Let west be the positive…

A: For object 1, velocity is not changing, so moving at constant velocity. For object 2, magnitude of…

Q: It took Joseph 30 minutes longer to drive 375 km from along the north shore of a river from Apex to…

A: Distance from north shore, d = 375 km  time,  t = 30 minute = 0.5 hours  Distance from south shore,…

Q: car is traveling at a constant velocity of magnitude v0v0 when the driver notices a garbage can on…

A: Given  Initial velocity u =v0  Distance s =d Final velocity v =0

Q: A truck covers 44.0 m in 8.00 s while smoothly slowing down to final speed of 2.00 m/s. (a) Find its…

A: Given data: Distance covered, S=44 m Time taken, t=8 s Final speed, v=2 m/s

Q: A person who walks for exercise produces the position-time graph shown. Calculate the average…

A: Solution The average velocity of any segment can be obtained by calculating its slope Segment A…

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

A:

Q: Kinematic Universe. Which of the following is/are ALWAYS TRUE? I. Displacement is a vector quantity…

A: We need to answer which of these statement is always true .  For which we need to understand every…

Q: 3- A body moves in a straight line at a speed of 10m/s for a distance of 200m and then at a speed of…

A: Answer:-  (3)  Case -1  Distance (S1) = 200 m  Speed (V1) = 10 m/s  Time (t1) = (S1)/(t1)  t1 = (200…

Q: A skydiver jumps out of an airplane. Her speed steadily increases until she deploys her parachute,…

A:

Q: A car accelerates from initial velocity of 10 m/s. the acceleration is increasing uniformly from…

A: Given, The initial velocity of the car u=10 m/s acceleration a1=8m/s2 time t1 =6 s deceleration…

Q: You travel from point A to point B in a car moving at a constant speed of  70km/h. Then you travel…

A: Yes, the average speed for the entire trip from A to C is 80 km/h

Q: An experimental rocket car starting from rest reaches a speed of after a straight 400-m run on a…

A:

Q: Suppose that a car traveling to the east (+x direction) begins to slow down as it approaches a…

A: Acceleration is the change in velocity per unit time. a=v-ut where, v is final speed u is initial…

Q: The record for a marathon is two hours, six minutes, 21 seconds. The marathon distance is 41.72 km.…

A:

Q: A car is driven east for a distance of 41 km, then north for 25 km, and then in a direction 26° east…

A: Given value--- first distance = 41 km , East.  second distance = 25 , North . third distance = 21…

Q: Time Position When an object moves, it doesn't always move at a steady pace. As a result, its…

A: To determine: Teacher's average speed and the maximum speed based on the given data.