Kinetic and Potential Energy

A 10 kg car is moving at 2 m/s. What is the energy of the car?

• 20 J

• 40 J

• 10 J

• 30 J

Calculate the kinetic energy of a truck that has a mass of 2900 kg and is moving at 55 m/s.

• 4386250 J

• 8772500 J

• 2193125 J

• 109656 J

A 10 kg mass is lifted to a height of 2 m. What is the energy at this position?

• 196.2 J

• 98.1 J

• 40 J

• 20 J

Tags

NGSS.HS-PS3-1

"Rocket man" has a propulsion unit strapped to his back. He starts form rest on the ground, fires the unit, and is propelled straight upward. At a height of 16 m, 5 m/s. His mass, including the propulsion unit, is about 136 kg. Find the work done by the force generated by the propulsion unit.

• 2.3*10^4 J

• 3.2*10^4 J

• 4.5*10^4 J

• 7.6*10^8 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS2-1

What is the energy of an object if it has a mass of 30 kg and is thrown at 15 m/s?

• 3375 J

• 6750 J

• 13500 J

• 2700 J

Which letter shows where is potential energy stored or at its maximum point?

• Y

• W

• X

• Z

There is a bell at the top of a tower that is 45 m. The bell weights 190 N. The bell has _____ energy. Calculate it.

• Potential, 8550 J

• Kinetic, 8550 J

• Potential, 192375 J

• Kinetic, 192375 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What factors does the kinetic energy of an object depend upon?

• mass and volume

• force and distance

• mass and height

• mass and velocity

Two objects were lifted by a machine. One object had a mass of 2 kg, and was lifted at a speed of 2 m/s. The other had a mass of 4 kg and was lifted at a rate of 3 m/s. Which object had more potential energy when it was lifted to a distance of 10 m?

• 4 kg object

• 2 kg object

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What is the energy of an object that has a mass of 290 kg and is moving at 2 m/s?

• 580 J

• 1160 J

• 2320 J

• 4640 J

Tags

NGSS.HS-PS3-1