Questions
What is the formula for kinetic energy?
- $K = rac{1}{2}mv^2$
- $K = mv$
- $K = rac{1}{2}m^2v$
- $K = rac{1}{2}mv^3$
What are the units of kinetic energy?
- Joules
- Watts
- Newtons
- Meters per second
What happens to the kinetic energy of an object when its velocity is doubled?
- It is doubled
- It is quadrupled
- It is halved
- It remains the same
What happens to the kinetic energy of an object when its mass is doubled?
- It is doubled
- It is quadrupled
- It is halved
- It remains the same
A 10 kg object is moving at a velocity of 5 m/s. What is its kinetic energy?
- 125 J
- 250 J
- 500 J
- 1000 J
A 20 kg object is moving at a velocity of 10 m/s. What is its kinetic energy?
- 200 J
- 400 J
- 800 J
- 1600 J
A 30 kg object is moving at a velocity of 15 m/s. What is its kinetic energy?
- 675 J
- 1350 J
- 2700 J
- 5400 J
A 40 kg object is moving at a velocity of 20 m/s. What is its kinetic energy?
- 1600 J
- 3200 J
- 6400 J
- 12800 J
A 50 kg object is moving at a velocity of 25 m/s. What is its kinetic energy?
- 3125 J
- 6250 J
- 12500 J
- 25000 J
A 100 kg object is moving at a velocity of 30 m/s. What is its kinetic energy?
- 15000 J
- 30000 J
- 60000 J
- 120000 J
A 200 kg object is moving at a velocity of 40 m/s. What is its kinetic energy?
- 32000 J
- 64000 J
- 128000 J
- 256000 J
A 300 kg object is moving at a velocity of 50 m/s. What is its kinetic energy?
- 225000 J
- 450000 J
- 900000 J
- 1800000 J
A 400 kg object is moving at a velocity of 60 m/s. What is its kinetic energy?
- 720000 J
- 1440000 J
- 2880000 J
- 5760000 J
A 500 kg object is moving at a velocity of 70 m/s. What is its kinetic energy?
- 1225000 J
- 2450000 J
- 4900000 J
- 9800000 J