WorksheetsMomentum and Impulse
Total questions: 50
Worksheet time: 51mins
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
What word can best describe the total momentum in an isolated system?
constant
large
lost
low
The total momentum of two objects before collision is 450 kgm/s. What will be their total momentum after collision?
0 kgm/s
175 kgm/s
350 kgm/s
450 kgm/s
Two objects with a total mass of 20 kg has an initial momentum of 100 kg∙m/s. If the masses stick together after the collision, what is the final velocity of the masses?
1 m/s
5 m/s
50 m/s
100 m/s
Two billiard balls with mass 1.0 kg each are travelling towards each other. The first one is moving at a velocity of 3 m/s, while the other one moves at a velocity of -2m/s. After the collision, one billiard ball moves to the left at a speed of 2 m/s. What is the speed of the other ball?
-3 m/s
-2 m/s
2 m/s
3 m/s
A 2.0-kg chunk of putty moving at 5.0 m/s collides with and sticks to a 8.0-kg bowling ball that is initially at rest. The bowling ball with its putty passenger will then be set in motion with what speed?
1 m/s
2 m/s
3 m/s
4 m/s
A 125 kg car moving at 12 m/s hits a 200 kg car moving at -13m/s. If the first car bounces back at -12.5 m/s what is the velocity of the second car after the collision?
1.2 m/s
2.3 m/s
3.2 m/s
4.1 m/s
The Law of Conservation of Momentum states:
The total momentum before a collision is equal to the total momentum after a collision.
The total momentum before a collision is greater than the total momentum after a collision.
The total momentum before a collision is less than the total momentum after a collision.
The total momentum before a collision is not related to the total momentum after a collision.
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
An object that has momentum can be described as _________
a) changing its velocity
b) moving fast
c) resisting changes in its state of motion
d) having its mass in motion
e) encountering a net force
An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact
impulse, time
impulse, force
force, time
time, force
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
If the cars collide INELASTICALLY, how would they move afterward (if at all)?
They would BOUNCE OFF and move LEFT
They would STICK TOGETHER and move LEFT
They would BOUNCE OFF and move RIGHT
They would STICK TOGETHER and move RIGHT
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
Two Pool Balls collide and then go separate directions.
inelastic collision
explosion
elastic collision
none of these
Collision where objects collide, and stick together.
inelastic collision
explosion
elastic collision
none of these
Action: Your foot applies a downward force onto the floor.
Reaction?
Your foot pushes through the floor.
The floor applies an equal and opposite force upward on your foot.
Your foot bounces off of the floor.
The floor collapses.
A car has 10,800 kg m/s of momentum as it collides with a trash dumpster AT REST. How much TOTAL MOMENTUM will the car and dumpster have after collision?
Less than 10,800 Kg x m/s
More than 10,800 Kg x m/s
The same. 10,800 Kg x m/s
Not enough information.
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
0.5 N
1.5 N
Not enough information
What is the TOTAL MOMENTUM for the system BEFORE COLLISION?
14 kg m/s
24 kg m/s
10 kg m/s
-24 kg m/s
What will the TOTAL MOMENTUM be AFTER COLLISION?
12 kg m/s
24 kg m/s
10 kg m/s
-24 kg m/s
If the cars collide INELASTICALLY, how would they move afterward (if at all)?
They would BOUNCE OFF and move LEFT
They would STICK TOGETHER and move LEFT
They would BOUNCE OFF and move RIGHT
They would STICK TOGETHER and move RIGHT
Which cart applies a GREATER FORCE during the collision (according to Newton's 3rd Law)?
Red Cart
Blue Cart
Forces are EQUAL for BOTH carts
The SI unit for momentum is:
N.kg
N.m/s
m/s.N
kg.m/s
What is Newton's 2nd Law of Motion?
Action - Reaction. If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.
F = ma. An object acted on by an unbalanced force will accelerate in the direction of that force, in direct proportion to the strength of the force, and in inverse proportion to the mass of the object.
Inertia: An object in motion tends to stay in motion, while an object at rest tends to stay at rest unless acted upon by an unbalanced force.
Check ALL that apply.
Impulse is:
The force that creates an acceleration.
The change in momentum.
the change in velocity that can be caused by a constant force over some discrete amount of time.
A vector
NOT a vector
Is momentum a quantity that can be conserved?
Yes
No
For an object that gets slower, the Δp is:
positive
negative
neutral
