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10th Grade Physics Quiz 1

Total questions: 14

Worksheet time: 16mins

Name
Class
Date
1.

You put a ball on the end of a string. You swing the ball with a rotation speed of 5.6 m/s. The mass of the ball is 2.0 kg. The length of the string is 1.60 m.


Calculate the centripetal force.

a)

39.2 m/s2

b)

17.9 m/s2

c)

7.00 m/s2

d)

14.0 m/s2

2.
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
3.
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
4.
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
5.
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
6.
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
7.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

5 m/s2

b)

17.63 m/s2

c)

10 m/s2

d)

8.81 m/s2

8.
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
9.

If an object has a centripetal acceleration of 55 m/s2 while traveling in a circle with a radius of 4 m, what is the speed of the object?

a)

14.8 m/s

b)

220 m/s

c)

3.7 m/s

d)

13.8 m/s

10.

If an object is traveling in a circle with a centripetal acceleration of 80 m/s2, what is the radius of the circle if the object is traveling at 12 m/s?

a)

1.8 m

b)

0.15 m

c)

6.7 m

d)

0.14 m

11.

A 30 kg object is traveling in a circle at 50 m/s. If the radius of the circle is 5 m, determine the magnitude of the centripetal force.

a)

15,000 N

b)

16,000 N

c)

17,000 N

d)

18,000 N

12.
Centripetal acceleration acts  ___________ of the circular path.
a)
towards the center
b)
along the circumference
c)
away from the center
d)
perpendicular to the plane
13.
Centripetal acceleration is GREATER when...
a)
the radius of the circular motion is decreased
b)
the radius of the circular motion is increased
c)
the linear speed is decreased
14.
In circular motion, the centripetal force is always directed towards...
a)
The center
b)
The tangent
c)
Away from the center
d)
Away from the tangent