Momentum & Energy

What happens to the momentum of a pool ball when it collides with another pool ball

• it transfers momentum, total momentum of the system stays the same

• it transfers momentum, some momentum is lost

• it keeps its own momentum and creates more in the collision

Tags

NGSS.HS-PS2-2

Total momentum before a collision is equal to the total momentum after a collision, this is

• law of conservation of momentum

• law of conservation of mass

• law of conservation of energy

• a completely false statement

Tags

NGSS.HS-PS2-2

Impulse = Force x Time you can therefore increase impulse by

• decreasing force

• decreasing time

• increasing both force and time

• decreasing both force and time

Tags

NGSS.HS-PS2-3

Energy is neither created nor destroyed, only transfered

• true

• false

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

An object that multiplies force or changes the direction of force is

• a machine

• work

• power

• energy

Tags

NGSS.MS-ETS1-1

Force applied causing an object to move

• a machine

• work

• power

• energy

Tags

NGSS.HS-PS2-1

Which is an example of Potential Energy?

• a stretched rubber band

• a baseball being thrown

• a volleyball being spiked

• a student sitting at a desk

Tags

NGSS.MS-PS3-2

How is Potential Energy calculated?

• mgh (mass)(gravity)(height)

• 1/2mv² 1/2(mass)(velocity)²

• mv (mass)(velocity)

• change in velocity

If a 5 kg object is 10 meters high how much potential energy does it have? use 10m/s for g

• 500 J

• 50 J

• 25 N

• 50 kg m/s

Tags

NGSS.MS-PS3-2

A 10 N book is 1 meter off the ground on the edge of a desk, how much PE does it have?

• 10 J

• 100 J

• 100 m/s

• 1 J

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4