An automobile travels on straight road for 39km at 24km/h. If then continues in the same direction for another 39 km at 48km/h. a. What is the average velocity of the car during his 78 km trip? (Assume that it moves positive direction) b. What is the average speed?

An automobile travels on straight road for 39km at 24km/h. If then continues in the same direction for another 39 km at 48km/h. a. What is the average velocity of the car during his 78 km trip? (Assume that it moves positive direction) b. What is the average speed?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 30P: A woodchuck runs 20 m to the right in 5 s, then rums and runs 10 m to the left in 3 s. (a) What is...

See similar textbooks

Related questions

Q: You drive a beat-up pickup truck along straight road for 8.4 km at 70 km/h, at which point the truck…

Q: A stone was dropped from a balloon which is ascending at a rate of 6 m/s when the balloon was 70m…

A: (a) Given : time , t=3 s Height h = 70 m Initial velocity u = 6 m/s FORMULA USED v = u + at a = g…

Q: On a straight highway, a car is moving initially at speed of 26.0 m/s. To pass another car, it…

Q: student is running to catch the campus shuttle bus, which is at a stopped at the bus stop. The…

Q: 1. A stone is thrown vertically downward at an initial speed of 14 m/s from a height of 65 m above…

Q: A stone is dropped from a top of the building and hits the ground below after 3.25s. A. How high is…

A: (a) How high is the building?

Q: A punter goofs and punts the football straight up. The hang time (total time in the air) is 4.00 s.…

Q: 8. A photographer in a helicopter ascending vertically at a constant rate of 1.2 m/s accidentally…

A: (a) Let t be the time taken to reach the ground, v be the final velocity, u be the initial velocity,…

Q: A truck on straight road starts from rest and accelerates at 4 m/s2 until it reach a speed 20 m/s.…

Q: A student is running to catch the campus shuttle bus, which is at a stopped at the bus stop. The…

A: NOTE: As per guidelines, I can solve first three parts of the question. If you need help with other…

Q: 9) A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped…

A: (a) Given data The height of the building is h = 20 m The time after which the second ball is…

Q: (II) You are driving home from school steadily at 95 km/h for 180 km. It then begins to rain and you…

A: Given: V1 = initial speed for the first portion of journey of 180 km = 95 km/h v2 = speed for the…

Q: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and…

A: given: enters with velocity u =22.0 m/s deceleration a =0.15 m/s2 length of station s =210 m

Q: A ball is thrown vertically upward with an initial velocity of 10 m/s from the top of a building of…

Q: 1. Two riders, Lester and Micko, are travelling in the same direction. Micko is speeding at a…

Q: A boat is sailing at 6 m/s 10° north of west. At time t=0 the captain of the boat starts its motor…

A: According to question we need to find that How fast will the boat be traveling after 60 seconds?

Q: The car moves on a very long straight highway at an initial velocity of 2.0m/s when it started to…

A: Given: The car moves on a very long straight highway at an initial velocity of 2.0m/s when it…

Q: If a man ran @ 3m/s for 10s and then -3m/s for 10s more.... A.What is the distance traveled? B.…

A: Concept Scalar and vector quantities. Scalar quatities are independent of direction whereas the…

Q: . A police car stopped at a set of lights has a speeder pass it at 100.0 km/h. The police car can…

Q: You drive on Interstate 10 from San Antonio to Houston, half the time at 69 km/h and the other half…

A: The average speed of a particle in a time interval is defined as the distance travelled by that…

Q: The nearest grocery is 60m, east from your house. You are walking at 1.2 m/s for 15.0 s toward the…

Q: Starting from the front door of your ranch house, you walk 60m due east to your windmill, and then…

A: Given:- You start to walk from the front door of the ranch house. First, you travel a distance d1 =…

Q: 2. A log is floating on swiftly moving water. A stone is dropped from rest from a 75-m high bridge…

Q: A mountain climber stands at the top of a 37.0-m cliff that overhangs a calm pool of water. She…

Q: A police officer at a speed trap clocks a speeding vehicle blazing by at 67 mph. The officer takes 2…

A: According to the Newton's laws of motion , the velocity can be calculated by using the formulas…

Q: Two boats start together and race across a 42-km-wide lake and back. Boat A goes across at 42 km/h…

A: Width of lake (d) = 42 km Speed of boat A = 42 khr (for both going as well as returning)Speed of…

Q: A monkey in a tree has two caps. He throws the blue cap straight up with a velocity of +10 m/s and…

Q: 9. A toy rocket fired straight up into the air has height s(t) = 320t – 16t? feet after t seconds a)…

Q: A rock is shot vertically upward from the edge of the top of a tall building.The rock reaches its…

Q: The nearest grocery is 60 m, east from your house. You are walking at 1.2 m/s for 15.0 s toward the…

Q: boy is running at a constant velocity of 7.20 m/s [E] to catch a bus which is stopped. When he is…

Q: A car starts from rest and drives una straight line for the next 5 km distance in the east direction…

Q: A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed…

A: Given: Initial speed of rocket u = 80.8 m/s. initial acceleration of rocket a1 = 3.9 m/s2. falling…

Q: Asmaa' is cycling her bike initially at 5.4 km/h before she decides to accelerate at 0.6 m/s?. i)…

Q: A child throws his basketball upward from the ground. The motion of the ball can be described by the…

A: Given: The equation of the position of the object. s=16t-t2…

Q: A cargo ship makes a short run between two docks: one in Mock Town. The other is in Logue Town. As…

A: The acceleration is a vector quantity that is defined as the rate of change of velocity of an…

Q: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and…

Q: 4) You launch a ball upwards at a velocity of 10 m/s from a height of one meter. a)How high does the…

Q: A car starting from rest is given an acceleration of 6m/s². a) In how many seconds will it attain a…

A: Given Data: The acceleration of a car is, a=6 m/s2 The final velocity of a car is, v=120 m/s The…

Q: A seagull can fly at a velocity of 9.00 m/s in still air. (a) If it takes the bird 20.0 min to…

A: (given) Velocity of seagull bird with respect to air (VBA) = 9 m/s…

Q: A motorcyclist heading east through a small town accelerates at a constant 4.0 m/s2 after he leaves…

A: Given that Initial position at t = 0 is X0 = 5.0 m east Acceleration is a = 4 m/s2 Initial velocity…

Q: if an object is thrown upward and then caught at the same height from which it was thrown: a.) what…

A: Let us consider a particle with initial velocity 'u' thrown upwards against the acceleration due to…

Q: A man runs at a constant 4m/s for 40s and then runs @ 8m/s back to his starting position. A. Total…

Q: An Osprey can fly horizontally (not diving) at a maximum speed of 70.0 km/hr. The bird takes off…

A: An Osprey can fly horizontally (not diving) at a maximum speed of vmax=70.0 km/hr. The bird takes…

Q: 2. A ball is shot vertically into the air at a velocity of 60 m/s. After 4 seconds, another ball is…

Question

HOW?

An automobile travels on straight road for 39km at 24km/h. If then continues in the same direction for another 39 km at 48km/h.

a. What is the average velocity of the car during his 78 km trip? (Assume that it moves positive direction)

b. What is the average speed?

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. The station is 210 m long. (a) How long is the nose of the train in the station? (b) How fast is it going when the nose leaves the station? (c) If the train is 130 m long, when does the end of the train leave the station? (d) What is the velocity of the end of the train as it leaves?
A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s to take off and it accelerates from rest at an average rate of 0.35m/s2 , how far will it travel before becoming airborne? (b) How long does this take?
A speedboat moving at 30.0 m/s approaches a no-wake buoy marker 1.00 102 m ahead. The pilot slows the boat with a constant acceleration of 3.50 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b) What is the velocity of the boat when it reaches the buoy?
A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.00 m/s, and her takeoff point is 1.80 m above the pool. (a) How long are her feet in the air? (b) What is her highest point above the board? (c) What is her velocity when her feet hit the water?
A motorist drives for 35.0 minutes at 85.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130. Km in 2.00 h. (a) What is his total displacement? (b) What is his average velocity?
Standing at the base of one of the cliffs of Mt. Arapiles in Victoria, Australia, a hiker hears a rock break loose from a height of 105 m. He can't see the rock right away but then does, 1.50 s later. (a) How far above the hiker is the rock when he can see it? (b) How much time does he have to move before the rock hits his head?
A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22.0-min rest stop. If the persons average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?
(a) Calculate the height of a cliff if it takes 2.35 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.00 m/s. (b) How long would it take to reach the ground if it is thrown straight down with the same speed?
A police car traveling at 95.0 km/h is traveling west, chasing a motorist traveling at 80.0 km/h. (a) What is the velocity of the motorist relative to the police car? (b) What is the velocity of the police cat relative to the motorist? (c) If they are originally 250 m apart, in what time interval will the police car over take the motorist?
A person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop. If the persons average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?
A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s2, to take off and it accelerates from rest at an average rate of 0.350 m/s2, how far will it travel before becoming airborne? (b) How long does this take?
A speedboat travels in a straight line and increases in speed uniformly from i = 20.0 m/s to f = 30.0 m/s in displacement x of 200 m. We wish to find the time interval required for the boat to move through this displacement, (a) Draw a coordinate system for this situation, (b) What analysis model is most appropriate for describing this situation? (c) From the analysis model, what equation is most appropriate for finding the acceleration of the speedboat? (d) Solve the equation selected in part (c) symbolically for the boats acceleration in terms of i, f, and x. (e) Substitute numerical values lo obtain the acceleration numerically. (f) Find the time interval mentioned above.