energy calculation

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.MS-PS3-1

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

What is the equation for calculating gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

What is the equation for calculating kinetic energy?

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.MS-PS3-1

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level. (g = 10 Nkg^-1)

• 250,000 J

• 2,500,000 J

• 25,000,000 J

• 250 J

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs? (KE = 1/2mv²)

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

Tags

NGSS.MS-PS3-1

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? (KE = 1/2mv²)

• 567 J

• 900 J

• 945 J

• 30 J

Tags

NGSS.MS-PS3-1

If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv²)

• 5.4 J

• 1.8 J

• 3 J

• 6 J

Tags

NGSS.MS-PS3-1

If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv²)

• 2.7

• 5.4

• 3.6

• 9

Tags

NGSS.MS-PS3-1