Reference no: EM133254152

1. A student moves his car for 20 meters with 50 N force. What is the work done by the student (in Joule)?

2. A student moves his car for 20 meters with 50 N force in 10 seconds. What is the power done by the student (in Watt)?

3. A student moves his car for 20 meters by doing 500 Joules work. What is the force (in Newton) the student applies to the car?

4. A bullet of 5 grams travels at 200 m/s. What is its kinetic energy (in Joule)?

5. A car traveling at 20 m/s has 400 Joules kinetic energy. What is the mass of the car (in kg)?

6. A car of 10 kg travels with 500 Joules kinetic energy. What is the speed of the car (in m/s)?

7. A ball of 10 kg is lifted to 20 meters above the ground. How much potential energy it has (in Joule)?

8. A ball is lifted to 10 meters above the ground and stored with 196 Joules energy. What is the mass of the ball (in kg)?

9. A student of 50 kg steps on a spring scale and compresses the spring by 10 cm. What is the spring constant (in Newton / meter)?

10. A spring gun compressed by 10 cm from its natural length stores 20 Joules elastic energy. What is the spring constant (in Newton / meter)?

11. A spring gun with spring constant 10 N/m is compressed and stores 20 Joules elastic energy. How long is the spring compressed from its natural length (in meter)?

12. A ball of 5 kg is shot vertically upward with 19.6 m/s. What is the maximum height it can reach (in meter)?

13. A spring gun with spring constant 4 N/m is compressed 2 meters from its natural length and then shoots a ball of 0.01 kg. What is the speed of the ball out of the gun (in m/s)?

14. A light bulb of 60 Watts is turned on for 10 minutes. How much energy does it consume (in Joule) from the electricity?