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Fall Review 3
Test Description: Conceptual Physics Fall Review 3
Instructions: Answer all questions to get your test result.
1) A person is attracted towards the center of the earth by a 500-N gravitational force. The force with which the earth is attracted toward the person is __________.
A
very very small
B
500-N
C
there is no force
D
very very large
2) A Mack truck and a Volkswagen traveling at the same speed have a head-on collision. The vehicle to undergo the greater change in velocity will be the __________.
A
Volkswagen
B
Mack truck
C
Neither one of them had velocity to begin with.
D
both the same
3) A rocket is able to accelerate in the vacuum of space when it fires its engines. The force that propels the rocket is the force __________.
A
neither A nor B
B
It runs on solar power.
C
of the exhaust gases on the rocket.
D
of the rocket on the exhaust gases.
4) Accelerations are produced by
A
masses
B
forces
C
velocities
D
accelerations.
5) The acceleration produced by a net force on an object is____________.
A
inversely proportional to the mass of the object
B
directly proportional to the magnitude of the net force
C
All of these are true.
D
in the sane direction as the net force
6) Pressure is defined as ___________.
A
force per area
B
time per area
C
distance per time
D
velocity per time
7) If the force on a cart doubles, what happens to the cart’s acceleration?
A
It halves
B
It quarters
C
It stays the same
D
It doubles
8) Suppose a cart is being moved by a force. If suddenly a load is dumped into the cart so that the cart’s mass doubles, what happens to the cart’s acceleration?
A
It quadruples
B
It doubles
C
It halves
D
It quarters
9) A tow truck exerts a force of 3000 N on a car, accelerating it at 2 m/s2. What is the mass of the car?
A
1500 kg
B
3000 kg
C
500 kg
D
1000 kg
10) A ball is left in the inside of a cabin of an air plane. When the plane accelerates forward, the ball rolls to the back of the cabin. What happens when the plan stops?
A
It rolls to the front of the cabin.
B
The ball is not affected by the stop (deceleration).
C
The ball's inertia keeps it against the back.
D
It is thrown harder against the back.
*select an answer for all questions
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