
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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what is the kinetic energy of a 1900 pound car traveling at 40 meters per second
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- A motorcyclist runs out of gas on a level road 250 m from the gas station. She pushes the 220-kg motorcycle with a constant force of 150 N. How much work does she do? For the motorcycle of the previous problem, if it was moving with a kinetic energy equal to the work done on it, how fast would it move?arrow_forwardA certain truck has twice the mass of a car. Both are moving at the same speed. If the kinetic energy of the truck is K, what is the kinetic energy of the car K/4 K/2 2K K 0.71Karrow_forwardA man picks up a 50 kilogram block and carries it up a flight of stairs 10 meters high. He then carries the block back down the stairs and places the block in its original position. What is the NET work done on the block?arrow_forward
- The energy needed to increase the speed of a certain car from 22 m/s to 44 m/s is 240 kJ. At what speed is the car is kinetic energy equal to 240 kJ? arrow_forwardA 50kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 × 10^4J .What is the speedometer reading of the car in km/h?arrow_forwardA man is pulling a sled (m-120 Kg) across the snowy tundra (see the figure below) by applying a force of 210 N at an angle of 9-18° with respect to the ground. He pulls the sled over a distance of 100 m. The sled started from rest and reached a final velocity of 6.8 m/s. How much work is done by the man on the sled measured in kJ? (1kJ = 1000J)arrow_forward
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