20 questions
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.
-2.5
-10
-18
-45
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
66 N·s
None of these
When the speed of an object is doubled, its momentum...
remains unchanged in accord with the conservation of momentum.
doubles.
quadruples.
decreases.
A 5 N force is applied to a 3 kg ball to slow it down from 9 m/s to 3 m/s. What is the impulse on the ball?
-2.5 N⋅s
-10 N⋅s
-18 N⋅s
-45 N⋅s
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
An insect applies 1.5 N of force to a windshield of a moving car. How much force does the windshield apply to the insect?
15,000 N
1.5 N
0.5 N
Not enough information
Which has more momentum?
A parked semi truck
A moving car
they have the same amount of momentum
Which has more momentum?
A hummingbird zipping down the street (v = 1 m/s)
A bus stopped at a stop sign
A bus barreling down the road (v = 10 m/s)
A hummingbird hovering at a feeder
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had twice the mass and was moving at the same speed?
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the same mass and was moving with one-half the speed?
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the twice the mass and was moving with twice the speed?
twice the momentum; 48 kg*m/s
1/2 the momentum; 12 kg*m/s
4x the momentum; 96 kg*m/s
1/4 the momentum; 6 kg*m/s
A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?
8 m/s
32 m/s
0.125 m/s
18 m/s