Ke and Pe

What is the formula for potential energy?  

• PE = weight x height
• PE = 2mv²
• PE = 1/2mv²
• PE = weight / height

Tags

NGSS.MS-PS3-2

What is the formula for kinetic energy? 

• KE = mgh
• KE = 2mv²
• KE = 1/2mv²
• KE = mv²

Tags

NGSS.MS-PS3-1

Kinetic energy can be calculated using the formula   KE = 1/2mv².  What is the kinetic energy of a bicycle that has a mass of 20 kg and is traveling at a velocity of 10 m/sec?  

• 10 J
• 100 J
• 1000 J
• 10,000 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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

What two factors affect the amount of Kinetic energy in an object?

• mass and height
• speed and distance
• mass and speed
• color and speed

Tags

NGSS.MS-PS3-1

What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s

• 50 J
• 5 J
• 250 J
• 25 J

Tags

NGSS.MS-PS3-1

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s

• 676 J
• 3.25 J
• 17J
• 338 J

Tags

NGSS.MS-PS3-1

A hedgehog of mass 2kg runs at a speed of 0.5 m/s. Calculate the kinetic energy.

• 1.25 J
• 1.00 J
• 0.50 J
• 0.25 J

Tags

NGSS.MS-PS3-1

How much potential energy does a 12N book have if it is 2 meters from the ground?

• 2.4 J
• 12 J
• 14 J
• 24 J

Tags

NGSS.MS-PS3-2

Calculate the kinetic energy when a man of mass 80 kg runs at a speed of 7 m/s

• 280 J
• 1,960 J
• 22,400 J
• 560 J

Tags

NGSS.MS-PS3-1