WorksheetsCircular motion
Total questions: 26
Worksheet time: 29mins
Name
Class
Date
1.
The velocity is always _____ to the line of a circle.
a)
outwards
b)
towards the center
c)
tangent
d)
faster
2.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
3.
Andromeda is a spiral galaxy, what is responsible for its spin?
a)
FA
b)
FT
c)
FG
d)
fs
4.
Assuming Andromeda rotates at a uniform rate, which stars are moving the fastest?
a)
Stars closest to center
b)
Stars furthest from the center
c)
Stars with the hottest temperature
d)
Stars with the coldest temperature
5.
The units of tangential (linear) velocity are
a)
m s-1
b)
rad s-1
6.
Centripetal force is...
a)
the resultant force acting on a body moving at constant speed in a circle
b)
the outwards force acting on a body moving at constant speed in a circle
7.
Centripetal acceleration acts towards the ___________ of the circular motion
a)
centre
b)
circumference
8.
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
a)
0.25 ms-2
b)
0.5 ms-2
c)
1 ms-2
d)
2 ms-2
9.
A horse gallops around a circular arena. The centripetal force on the horse is ___.
a)
directed outward
b)
tension
c)
directed toward the center of the arena
d)
9.8 N
10.
Which represents the acceleration of the ball?
a)
A
b)
B
c)
C
d)
D
11.
Which of the following depict the speed of the blowing ball?
a)
A
b)
B
c)
C
d)
D
12.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
13.
Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s
a)
4.1 kg
b)
3.6 kg
c)
2.5 kg
d)
1.8 kg
14.
Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
a)
10 N
b)
20 N
c)
30 N
d)
40 N
15.
You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.
a)
18 N
b)
36 N
c)
72 N
d)
144 N
16.
Objects moving with constant speed in a circular path experience
a)
constant motion
b)
linear acceleration
c)
angular acceleration
d)
centripetal acceleration
17.
True or False: Centripetal acceleration causes circular motion.
a)
True
b)
False
18.
What object experiences uniform circular motion?
a)
A car speeding up as it turns left
b)
A car traveling around a roundabout at a constant speed
c)
A car slowing down as it crests a tall hill
d)
A car traveling down the road at a constant speed
19.
Why do objects experience centripetal acceleration?
a)
Because they are speeding up as they move in a circle
b)
Because they are constantly changing direction and the net change is directed inward
c)
Because they are constantly changing both speed and direction
d)
Because when you have 100 people pedaling, you can speed up more easily.
20.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity
c)
Normal
d)
Tension
21.
A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's tangential speed?
a)
19.7 m/s
b)
5.99 m/s
c)
0.17 m/s
d)
388.01 m/s
22.
A pilot experiences centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s. What is the radius of the loop?
a)
203 m
b)
8163 m
c)
80,003 m
d)
23 m
23.
What is the SI unit for circumference?
a)
meter
b)
pi
c)
inches
d)
kilometer
24.
At the top of a rollercoaster loop, In what directions do gravity and the normal force point. A free body diagram is useful to help answer the question
a)
gravity: down, normal force: up
b)
gravity: down, normal force: down
c)
gravity: down: normal force: direction of motion
25.
What happens to the centripetal force exerted on an object if you triple the velocity?
a)
it increases to 3X
b)
it decreases to 6X
c)
it increases to 6X
d)
it increases to 9X
26.
A satellite of mass m and speed v orbits the Earth at a distance r from the centre of the Earth. The gravitational field strength due to the Earth at the satellite is equal to.
a)
v/r
b)
v2/r
c)
mv/r
d)
mv2/r
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