IV. Determine whether the objects in the following problems have kinetic or potential energy. Then choose the correct formula to use and solve the problem. (Be sure to show your work!) 21. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has energy. Calculate it. 22. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. The carriage has energy. Calculate it. 23. A car is traveling with a vel ocity of 40 m/s and has a mass of 1120 kg. The car has Calculate it. energy.

IV. Determine whether the objects in the following problems have kinetic or potential energy. Then choose the correct formula to use and solve the problem. (Be sure to show your work!) 21. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has energy. Calculate it. 22. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. The carriage has energy. Calculate it. 23. A car is traveling with a vel ocity of 40 m/s and has a mass of 1120 kg. The car has Calculate it. energy.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

IV. Determine whether the objects in the following problems have kinetic or potential energy. Then choose the
correct formula to use and solve the problem. (Be sure
show your work!)
21. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball
has
energy. Calculate it.
22. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N.
The carriage has
energy. Calculate it.
23. A car is traveling with a vel ocity of 40 m/s and has a mass of 1120 kg. The car has
Calculate it.
energy.
24. A cinder block is si tting on a platform 20 m high. It weighs 79 N. The block has
energy. Calculate it.

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