
Ch 3 Forces and Newton's Law Test
Authored by Janie Womack
Physics
9th Grade
Used 10+ times

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21 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The amount of gravitational force between objects depends on their __________ ( mark all answers that apply)
frictional forces
accelerations
mass
distance apart
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The upward force exerted on an object falling through air is ________.
Momentum
Terminal velocity
weightlessness
air resistance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An object in free fall seems to be _________
not moving
slowed down by air
weightless
falling constantly
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an object moves in a circle, its acceleration towards the center is the result of _____
centrifugal force
terminal velocity
Friction
Centripetal force
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a car traveling at 50 km/h collides head-on with an immovable object, it stops within about _______
100 seconds
10 seconds
1 second
0.1 second
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Astronauts in the international space station are ______ because they in orbit around the earth.
weightless
at terminal velocity
experiencing air resistance
motionless
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An object that has reached terminal velocity is accelerating at ____________
9.8 m/s2
0 m/s2
one g
98 m/s2
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