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Circular Motion 6.2
Test Description: Centripetal and gravitation
Instructions: Answer all questions to get your test result.
1) When a roller coaster goes through a loop, the centripetal force is directed towards?
A
The seat
B
The center
C
The top
D
The bottom
2) A ball is turning clockwise. If the string is cut while the ball is at the top of the circle, which way will the ball travel?
A
Left
B
Right
C
Down
D
Up
3) Any force that causes an object to move in a circle is called?
A
Centripetal
B
linear
C
angular
D
Centrifugal
4) Which of the following does not affect centripetal force?
A
Radius of Revolution
B
Velocity of the object
C
Mass of the Object
D
Direction of motion
5) Which of the following is not an example of acceleration?
A
a air plane banking into a turn as it slows to prepare for its landing
B
A car driving due north at 50 km/hr
C
A race car making a turn at 100 km/hr
D
A person going around in a Ferris Wheel
6) If the velocity of an object is increased what happens to centripetal force?
A
Stays the same
B
Decreases
C
Increases
7) If the mass of an object is reduced what happens to the centripetal force?
A
Increases
B
stays the same
C
Decreases
8) Why can't you feel the gravity between you and the person next to you?
A
Living things don't have gravity
B
You are too close to the person to feel gravity
C
Only earth has gravity
D
the mass of the person next to you is too small.
9) What provides the centripetal force to cause the planets to orbit the sun?
A
Centrifugal
B
Gravity
C
Friction
D
Inertia
10) THe orbits of planets around the sun are_______.
A
Circular
B
Elliptical
C
Parabolic
D
hyperbolic
11) If you move two object further apart the gravitational pull between them________.
A
increases
B
does not change
C
decreases
12) Where would you encounter the most gravity?
A
Earth
B
the moon
C
pluto
D
Jupiter
*select an answer for all questions
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