KE & PE

When a golf ball is hit, it travels at 41 meters per second. The mass of a golf ball is 0.045kg. What is the kinetic energy of the golf ball? Use two digits.

What is the mass of a baseball that has a kinetic energy of 100 J and is traveling at 5 m/s?

A student is hit with a 1 kg pumpkin pie. The kinetic energy of the pie 32 J. What was the speed of the pie?

An apple in a tree has a gravitational potential energy of 175 J and a mass of 0.36 g. How high from the ground is the apple? Use 10 m/s² for the acceleration of gravity. Use a two digit answer.

A box with a mass of 12.5 kg sits on the floor. How high would you need to lift it for it to have a GPE of 355J? Use three digits in your answer and 10 m/s² for acceleration of gravity.

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy.

• a 500 kg boulder on a 5 meter hill

• a 500 kg boulder on a 10 meter hill

• a 500 kg boulder on a 20 meter hill

Tags

NGSS.MS-PS3-2

What two factors affect GRAVITATIONAL POTENTIAL energy?

• mass

• height

• speed

• mass and speed

• mass and height

Tags

NGSS.MS-PS3-2

A plane flying above the ground has what energy?

• Only GPE because it is high

• Only KE because it is moving

• GPE and KE because it is off the ground and moving

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the formula for Gravitational Potential Energy?

• PE = mgh

• KE = 1/2mv²

• W = Fd

• P = W/t

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

What is the formula for Kinetic Energy?

• PE = mgh

• KE = 1/2mv²

• W = Fd

• P = W/t

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5