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15 questions
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
Momentum before = Momentum after
according to the Law of Conservation of _______________.
Momentum
Energy
Force
Acceleration
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
For every action, there is an equal and opposite reaction.
Newton's 1st Law
Newton's 3rd Law
Newton's 2nd Law
Law of Momentum
Which TWO variables determine the MOMENTUM for an object?
time
density
velocity
mass
A trampoline increases __________________, which in turn decreases _____________________.
force / time
time / force
mass / weight
acceleration / velocity
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 two cars have an ELASTIC COLLISION, which direction (if any) will they move?
The will BOUNCE OFF and move LEFT
They will STICK TOGETHER and move LEFT
They will BOUNCE OFF and move RIGHT
They will STICK TOGETHER and move RIGHT
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
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