- 1. 1.
Suppose you throw a melon with a 20 N net force. The melon has an acceleration of 10 m/s/s? What is the mass of the melon?
- 2. 2.
Imagine a small catapult that provides a net force of 3000 N on a big ole rock giving the rock an acceleration of 20 m/s/s ? What is the mass of the rock?
- 3. 3.
What is the acceleration of a 1000 kg car subject to a 500 N net force? ( use m/s/s for the unit)
- 4. 4.
During a test crash, an air bag inflates to stop a dummy’s forward motion. The dummy’s mass is 75 kg. If the net force on the dummy is 825 N, what is the dummy’s deceleration? ( use m/s/s for the unit)
- 5. 5.
A bicycle takes 8.0 seconds to accelerate at a constant rate from rest to a speed of 4.0 m/s. If the mass of the bicycle and rider together is 85 kg, what is the net force acting on the bicycle? (Hint: First calculate the acceleration using a = vf – vi / t ) ( your answer should go to the tenths place)
- 6. 6.
What is the acceleration of gravity on earth? ( use m/s/s for the unit)
- 7. 7.
Find the weight of a 250 kg cow on earth. ( your answer should go to the tenths place)
- 8. 8.
Find the weight of a 1400 kg car on the moon. The acceleration of gravity on the moon is 1.6 m/s/s.
- 9. 9.
Find the mass of a 25 N watermelon on earth.( round the answer to the tenths place)
- 10. 10.
Find the mass of a 50,000 N truck on earth.( round answer to the tenths)
- 11. 11.
What is the velocity of an 80 kg runner with a momentum of 200 kg x m/s? (round answer to the tenths)
- 12. 12.
A car has a mass of 1050 kg and has 15,250 kg x m/s of momentum as it drives down the road. What is the velocity of the car? ( round to tenths)
- 13. 13.
Find the mass of a vehicle that has a velocity of 26.5 m/s and has reached a momentum of 78,000 kg x m/s.
- 14. 14.
A tennis ball generates 0.6099 kg x m/s units of momentum and has a speed of 10.7 m/s. What is the mass of the tennis ball? ( record all the digits)
- 15. 15.
What is the momentum of a 120,000 kg rocket if it travels at a speed of 1960 m/s?
- 16. 16.
Which will have more momentum, a softball (0.42 kg) thrown at 45 m/s, or a baseball (0.35 kg) thrown at 55 m/s?
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