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3rd Quarter Exam Review
Test Description: Circular motion
Instructions: Answer all questions to get your test result.
1) Definition: When an object moves at a constant speed in a circle
A
circular force
B
centripetal force
C
Uniform circular motion
D
orbital motion
2) In uniform circular motion, the tangential speed
A
is nonexistent in the circle
B
is constant
C
is directed toward the center of the circle
D
changes rapidly
3) The net force directed toward the center of a circle is called
A
circular force
B
centrifugal force
C
orbital force
D
centripetal force
4) Find the centripetal acceleration of a bike moving in a circle with a radius of 1.5m at a tangential speed of 1.2m/s
A
0.96m/s2
B
0.80m/s2
C
1.25m/s2
D
1.9m/s2
5) A bike goes in a circle with a radius of 2.3m. The mass of the child and the bike is 56kg, and they move at a tangential speed of 3.4m/s. Find Centripetal acceleration
A
0.094m/s2
B
922m/s2
C
1.5m/s2
D
5.0m/s2
6) What is directed toward the center of a circle?
A
speed
B
just acceleration
C
force and speed
D
force and acceleration
7) What is the unit for centripetal acceleration?
A
m2/s2
B
m/s2
C
m/s
D
N
8) How is speed directed in circular motion?
A
parallel to the circle
B
outside the circle
C
Tangent to the circle
D
Toward the center of a circle
9) What is the unit for the radius of a circle?
A
m/s
B
m
C
inches
D
kg
10) A toy plane moves at a tangential velocity of 4.5m/s in a circle with a radius of 7m. What is the centripetal acceleration?
A
0.64m/s2
B
2.9m/s2
C
1.6m/s2
D
11m/s2
*select an answer for all questions
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