Calculating Energy

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass

• Friction and movement

• Mass and Movement

• Height and Friction 

Tags

NGSS.MS-PS3-2

Energy due to motion is ____________ energy. 

• Potential 

• Energy

• Kinetic

• Friction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The SI unit of work is?

• Joules

• Watts

• Newtons

• meters

A golf ball has a mass of 0.046 kg. It is dropped and has 1.1 J of gravitational potential energy (gravity = 9.8 m/s²). What height was it dropped from?

• 2.4 meters

• 234 meters

• 0.41 meters

• There isn't enough information to determine the height.

Tags

NGSS.MS-PS3-2

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.MS-PS3-1

NGSS.MS-PS3-4

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

Tags

NGSS.MS-PS3-2

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

Tags

NGSS.MS-PS3-1

An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy of the apple?

• 19.6 J

• 20 J

• 98 J

• 196 J 

Tags

NGSS.MS-PS3-2

The amount of kinetic energy something has depends on its...

• mass and height

• mass and weight

• mass and speed

• weight and mass

Tags

NGSS.MS-PS3-1

What is the mass of a ball has a kinetic energy of 450 J, what must it mass be if it is traveling through the air at 30 m/s?

• 0.25 kg

• 15 kg

• 1 kg

• 0.50 kg

Tags

NGSS.MS-PS3-1