7.6 potential and kinetic energy calculations

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball?

• 567 J

• 900 J

• 945 J

• 30 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

• 71 kg

• 22.72 kg

• 142 kg

• 2.32 kg

Tags

NGSS.HS-PS3-1

If the marble had a mass of 0.3kg and the hill was 2.3 m tall, how much potential energy did it have at the top of the ramp?

• 2.3 J

• 0.23 J

• 6.9 J

• 5.2 J

Tags

NGSS.HS-PS3-1

What is the equation for calculating gravitational potential energy

• GPE=mv

• GPE=1/2 mv^2

• GPE=mgh

• GPE=Ft

Tags

NGSS.MS-PS3-2

What is the equation for calculating kinetic energy?

• KE=mv

• KE=1/2 mv^2

• KE=mgh

• KE=Ft

You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?

• 900 J
• 1800 J
• 60 J
• 30 J

Tags

NGSS.HS-PS3-1

There is a bell at the top of a tower that is 45 m high. The bell weighs 100 kg. What is the potential energy of the bell?

• 980 J
• 441 J
• 4,500 J
• 44,100 J

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. What is the KE of the car?

• 22,400 J
• 44,800 J
• 896,000 J
• 1,792,000 J

Which of the following has the GREATEST IMPACT on the kinetic energy of an object?

• Mass 
• Velocity
• Height
• The acceleration due to gravity

Tags

NGSS.HS-PS3-2

A 50.00kg cheetah has a kinetic energy of 18,000J. How fast is the cheetah running?

• 26.83m/s

• 180m/s

• 360m/s

• 720m/s

Tags

NGSS.HS-PS3-2