WorksheetsImpulse & Momentum
Total questions: 18
Worksheet time: 51mins
The SI unit for momentum is:
N.kg
N.m/s
m/s.N
kg.m/s
Choose the best answer below:
A large, slow-moving object has greater momentum than a smaller, slower object.
Always
Sometimes
Never
Linear momentum is defined as the product of a system’s ______________ multiplied by its _____________:
mass, velocity
acceleration, mass
acceleration, force
force, mass
force, velocity
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
If a large train (Ftrain) collides with a car (Fcar), which of the following statements is true? Check all that apply:
Ftrain > Fcar
Ftrain < Fcar
|Ftrain| = |Fcar|
Ftrain = -Fcar
For an object that gets slower, the Δp is:
positive
negative
neutral
For an object that hits a wall and bounces back, the Δp is:
positive
negative
neutral
A car of mass m, traveling at speed v, stops in time t when maximum braking force is applied. Using the same force, what time would be required to stop a car of mass 2m traveling at speed v?
½ t
t
√2 t
2 t
A car moves in the +x direction at 55 mph. It makes a u-turn, and is then returning (-x direction) at 55 mph. Is Δp...
Zero
To the left (-x direction)
To the right (+x direction)
There is not enough information to tell
Objects on Mars weigh approximately 38% more than they do on earth. Will a 10 kg bowling ball moving at 5 m/s have more momentum on Earth or Mars?
Earth
Mars
Same
To the Left
To The Right
Straight Up
Straight Down
Consider two carts, of masses m and 2m, at rest on an air track. If you push each car for 3 s, exerting equal force on each, the momentum of the light car after the push is ________ than the heavier car.
Four Times Greater
Two Times Greater
Exactly The Same
One-Half as Much
One-Fourth as Much
Consider two carts, of masses m and 3m, at rest on an air track. If you push each car for 2 s, exerting equal force on each, the energy of the light car after the push is...
9 Times Greater
3 Times Greater
2 Times Greater
The Same!
1/2 as Much
Suppose a ping-pong ball and a bowling ball are rolling toward you. Both have the same momentum, and you exert the same force to stop each. How do the time intervals to stop them compare?
Less time for the ping-pong ball
Times are equal
More time for the ping-pong ball
Suppose a ping-pong ball and a bowling ball are rolling toward you. Both have the same momentum, and you exert the same force to stop each. How do the distances needed to stop them compare?
It takes a shorter distance for the ping-pong ball to stop
The distances to stop are the same
It takes a longer distance to stop the ping-pong ball
Two objects, P and Q, have the same momentum. Q can have more kinetic energy than P if it has:
More mass than P
The same mass as P
More speed than P
The same speed as P
