gravitional potential and kinetic energy

The SI unit in which kinetic energy is measured is 

• Newton
• Kilogram
• Joules
• Metres per second

Tags

NGSS.HS-PS3-2

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J
• 36 J
• 12 J
• 6 J

Tags

NGSS.MS-PS3-1

A golf pro swings his driver which weighs 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.

• 2700 J
• 16.9 J
• 1350 J
• 45 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

An explosion of gas from a Hawaiian volcano blows a rock into the sky. the rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s

• 200Kg
• 20,000Kg
• 10Kg
• 200Kg

Elastic energy gains potential energy when compressed or stretched.

• True

• False

What equation is used to calculate elastic potential energy?

• E_{p = m g h}

• E_{p = 1/2 k x}²

• E_{p = F / E d}

Leo (70 Kg) stretches the trampoline mat by 37 cm. Calculate the elastic potential energy he puts into the trampoline mat.

• 4.79 J

• 126.9 J

• 47.9 J

• 12.76. J

Tags

NGSS.HS-PS3-1

Gravitational potential energy is affected by the position of the object. For example how high above the ground an object is would increase its potential energy.

• True

• False

Tags

NGSS.MS-PS3-2

A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?

• 43982.4 J
• 63982.3 J
• 43962.4 J
• 83942.4 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS2-4

What equation is used to calculate elastic potential energy?

• E_{p = m g h}

• E_{p = 1/2 k x}²

• E_{p = F / E d}