momentum

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

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

Tags

NGSS.HS-PS2-2

The definition of momentum is

• Mass in Motion
• The size of an object
• The velocity of an object
• A comparison between two objects

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 at rest. 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

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

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

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

Tags

NGSS.HS-PS2-2

Which takes more force  to catch, a bowling ball or a ping pong ball?

• bowling ball because it has more momentum
• ping pong ball because it has more momentum
• both require the same amount of force when catching
• bowling ball because it has less momentum

Tags

NGSS.HS-PS2-1

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

• 1 kgm/s

• 6 kgm/s

• 33.3 kgm/s

Softer landings tend to

• increase impact force
• increase force
• increase collision time
• increase change in momentum

Tags

NGSS.HS-PS2-3

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s.  The time for the collision is _____ seconds.

• 1.8
  .
  .
• 2.5
• 3.6
• 10

Tags

NGSS.HS-PS2-1

A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s.  What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?

• 1 N
• 40 N
• 25 N
• 5 N

Tags

NGSS.HS-PS2-1