Linear Momentum

A sailboat of mass m is moving with a momentum p. How would you represent its kinetic energy in terms of these two quanitites

(p^2)/ 2m

If you pitch a baseball with twice the kinetic energy you gave it the previous pitch, the magnitude of its momentum will by

1.41 times as much

In a game of pool the white cue ball hits the #9 ball and is deflected at a 35 degree angle to the orignal line of motion. what is the angle of deflection below the orignal line of motion for the # 9 ball

55 degrees

Whena light ball with speed of 6.0 m/s collides with a heavy ball at rest, the light balls speed will be

6.0m/s

A small object collides with a large object and sticks. Which object experiences the larger magnitude of momentum change?

Both objects experience same magnitude of momentum change

A very heavy object moving with a velocity v collides head on with a very light object moving with velocity -v. the collision is elastic and there is no friction. The heavy object barely slows down. What is the speed of the light object after the collision?

Nearly 3v

A pingpong ball moving east at a speed of 4 m/s collides with a stationary bowling ball. The pingpong baall bounces back west and the bowling ball moves slowly East. Which object experience greater magnitude impulse during the collsion

Neither, they both experience the same magnitude

A small car mesnes with a large truck in a head on collsion. Which of the following statments concernig the magnitude of the average collision force is correct

The small car and the truck experiences the same average

Two objects collide and bounce off eachother. Linear momentum is

definitely conserved

In a game of pool, the white cue ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had orginally. The collison type is

elastic

A 100kg football linebreaker moving at 2.0m/s tackles head on and 80 kg halfback running 3.0 m/s.

halfback will drive the linebreaker backward

When is kinetic energy conserved

in elastic collions

2 objects collide and stick together, kinetic energy

is conserved only if the collision is elastic

Tight rope walkers walk with a long flexible rod in order to

lower their center of mass

A very light object moving with speed v collides head on with a very heavy object at rest in a frictionless environment. The collison is almost perfectly elastic. The speed of the heavy object after the collison is

much less than v

A child falls sideways off a sled while sledding on a frictionless ice. What happens to the velocity of the sled

remains the same

When a cannon fires a cannon ball the cannon will recoil because

the momentum of the cannon ball and cannon is conserved

Two equal mass balls (red and blue) are dropped from the same height and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of impulse during its collision with the floor

the red ball