Global MCQ Practice

🌐 Total MCQ
🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books

Class 9 Science Chapter 11 Work And Energy Quiz 4 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Energy is the ability to cause what?
2. Four toy cars of equal mass are rolling on the floor. Their velocities are listed below. Which has the most potential energy?
3. If I have a very mean cat that is perched on top of my refrigerator, assuming it has a mass of 2 kg and a height of 2 meters, what is the cat's potential energy? (assume 10 m/s$^{2}$ for grav. acc.)
4. A girl applies a horizontal force of 400-N to a box as she slides it across the room. If she moves the box 25-m how much work did she do to the box?
5. Energy possessed by a body by virtue of its motion is called:
6. You raise a bucket of water from the bottom of a well that is 12 m deep. The mass of the bucket and the water is 5.00 kg, and it takes 15 s to raise the bucket to the top of the well. How much power is required?
7. When a coil spring is compressed, the work is done on the spring. the elastic potential energy
8. Commercial unit of energy is
9. The work done by a horse against gravity by standing still with his owner (69 kg) is:
10. The work done on an object does not depend upon the
11. Match the energy change with the appliances. lamps and Flashlights are examples of what type of energy conversion
12. Which of the following does a simple machine do?
13. What is energy?
14. Work done by friction ..... of the body.
15. The faster an object moves, the ..... kinetic energy it has.
16. Bob pushes against a wall with a force of 500-N for 20 seconds. Obviously, he cannot move the wall, but he is a bit tired afterwards. How much work did bob do pushing against the wall?
17. Work done upon a body is:
18. Which of the following is the main source of energy for living things?
19. When a ball is dropped from a height, and it falls to the ground, what happens to the kinetic energy?
20. You pick up a 3.8 kg can of paint from the ground and lift it to a height of 1.4 m. You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this time (when the can of paint was stationary)?
21. Energy from a compressed spring would be an example of .....
22. The kinetic energy of an object is K. If its velocity is doubled then its kinetic energy will be:
23. If speed of a car becomes 2 times, its kinetic energy becomes
24. In which of the following cases, kinetic energy is changing in electric energy?
25. What is the unit for Energy?
🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books