Physics - Momentum and Impulse

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 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 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 

• 5 m/s
• 2.5 m/s
• 10 m/s
• 7.5 m/s

Tags

NGSS.HS-PS2-2

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?

• 18.6 m/s
• 9.3 m/s
• 7.5 m/s
• 1.86 m/s

Tags

NGSS.HS-PS2-2

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 N*s
• 6 N*s
• 33.3 N*s 
• None of these

The impulse is ______ the change in momentum

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

Tags

NGSS.HS-PS2-2

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum
• total speed
• total Velocity
• Energy

Tags

NGSS.HS-PS2-2

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.

• 0.5 m/s
• 1.0 m/s
• 0.33 m/s
• 0.67 m/s

Tags

NGSS.HS-PS2-2

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of -6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:

• 2 m/s

• 3.4 m/s

• 4.6 m/s

• 7.1 m/s

Tags

NGSS.HS-PS2-2