Extra Credit Momentum, work, power, energy

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

Tags

CCSS.7.RP.A.3

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

Tags

NGSS.HS-PS2-2

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car
• bike
• they are equal
• cannot determine using the info provided

Tags

NGSS.HS-PS2-2

A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at?

• 3.57 m/s
• 3.2 m/s
• 10.0  m/s
• 9.0  m/s

Tags

NGSS.MS-PS2-1

The impulse is ______ the change in momentum

• Greater than
• Equal to
• less than
• always double

Tags

NGSS.HS-PS2-2

The purpose of crumple zones on a car is to

• decrease time of impact.

• increase force of impact.

• increase the time of impact.

• decrease the impulse during impact.

When two objects collide, the P_before is ____________ the P_after.

• more than 
• less than 
• equal to
• unrelated to

Tags

NGSS.MS-PS2-1

If a crane lifts a small car 15 meters using 25,000 joules of work in 5 seconds, how much power was generated by the crane?

• 5, 000 Watts
• 1,667 Watts
• 75 Watts
• 375,000 Watts

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Force X Distance = _______?

• Work
• Power
• Energy
• Force

What is kinetic energy?

• When an object is in motion
• When an object is not in motion
• all of the above
• none of the above

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5