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WorksheetsMomentum
Total questions: 50
Worksheet time: 1hrs 18mins
Which of the following has the MOST momentum?
rolling ping-pong ball
rolling bowling ball
rolling soccer ball
rolling basketball
Which object has more momentum?
motorcycle at 15 mph?
bike at 15 mph
car at a stoplight
runner at 10 mph
If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?
2400 m/s
1.5 m/s
240 m/s
.67 m/s
If an object has a velocity of 15 m/s and a momentum of 30 m/s, what is its mass?
450 m/s
2 m/s
4,500 m/s
.5 m/s
In an elastic collision, ______ is conserved.
Momentum only
Kinetic Energy only
Both momentum and energy
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
Skater 1 experiences a greater change in momentum
Skater 2 experiences a greater change in momentum
Skater 1 has a greater speed than Skater 2
Skater 1 experiences a greater force
a bat strikes a 0.05 kg baseball so that its velocity changes by +30 m/s in 0.1 s. With what average force was the ball struck?
+15 N
-15 N
+300 N
-300 N
+150 N
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
Calculate the impulse on the ball.
A car and bird are about to hit each other. What is not true about the collision?
They will have the same change in velocity
They will experience the same force.
They will experience the same change in momentum
The total momentum is the same before and after the collision.
A 1 kg ball rolling 4 m/s runs into another 2 kg ball which is not moving. How much total momentum does the balls have before the collision
4
6
12
0
A 1 kg ball rolling 4 m/s runs into another 2 kg ball which is not moving. How much total momentum does the balls have after the collision?
4
12
6
0
The two boxes shown are about to collide. The box on the left will come to a stop. The box on the right will bounce backwards. The 5 kg box will have a change in momentum of ...
12 kg m/s
10 kg m/s
-10 kg m/s
16 kg m/s
Consider this elastic collision between two spheres. They collide and then bounce apart. Sphere A has a mass of 8-kg. Sphere B has a mass of 5-kg. Before the collision, Sphere A is travelling to the right at 3 m/s and Sphere B is travelling to the left at 4 m/s. After the collision, Sphere A is travelling 2 m/s. How fast is Sphere B travelling after the collision?
about 5.6 m/s
about 3.2 m/s
about 7.4 m/s
about 8.1 m/s
If a force is exerted on an object, which statement is true?
a large force always produces a large change in the object's momentum
a large force produces a large change in the object's momentum only if the force is applied over a very short time interval
a small force applied over a long time interval can produce a large change in the object's momentum
a small force produces a large change in the object's momentum
No collision is either perfectly elastic or perfectly inelastic.
True
False
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
A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. If all the momentum is transferred, at what speed will the second boxcar move?
18.6 m/s
9.3 m/s
7.5 m/s
1.86 m/s
A football is kicked with a force of 20 N, the force acts for 0.3 s.
Calculate the impulse on the ball.
1 kg*m/s
6 kg*m/s
33.3 kg*m/s
None of these
A .05 kg rubber ball is dropped and hits the floor with an initial velocity of 10 m/s. It rebounds away from the floor with a final speed of 7 m/s after being in contact with the floor for .01 seconds. Find the magnitude of the force exerted by the floor on the rubber ball.
-25 N
25 N
-85 N
0.85 N
A diver of mass 65 kg is initially at rest holding a speargun. He shoots a 2 kg spear from the gun with a speed of 15 m/s at a fish, but misses. How fast does the diver move backwards immediately after the spear is shot?
30 m/s backwards
.38 m/s backwards
.46 m/s backwards
47.5 m/s backwards
A 0.035 kg bullets strikes a 5 kg stationary wooden block and embeds itself in the wood. The block and the bullet fly off together at 8.6 m/s. What was the original speed of the bullet?
38 m/s
0.75 m/s
43 m/s
1237 m/s
