Free Printable Central Force

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Central Force

Total questions: 24

Worksheet time: 40mins

Name

Class

Date

Which represents the acceleration of the ball?

What happens to the centripetal force exerted on an object if you triple the velocity?

it increases to 3X

it decreases to 6X

it increases to 6X

it increases to 9X

What is the distance around a circle?

Circumference

Area

Diameter

Radius

What is the formula for circumference of a circle?

C = π⋅r

C = 2⋅π⋅r

C = π⋅D

C = π⋅2D

Why does a car accelerate as it round a corner at a constant speed?

Its direction changes

It doesn't

It slows down

Its speeds up

Acceleration is a change in ________.

direction

speed

velocity

distance

The velocity is always _____ to the line of a circle.

outwards

towards the center

tangent

faster

The time taken for one complete revolution is called the...

Period

Frequency

Angular velocity

What is the direction of the velocity at point B, if the ball is revolving clockwise?

right

down

left

10.

At the instant shown in the diagram, the car's centripetal acceleration is directed-

toward E

toward N

toward W

clockwise

11.

Which represents the acceleration of the ball?

12.

Which of the following is the unit for centripetal force?

m/s²

kg⋅m/s

13.

Which of the following units is used for tangential velocity?

m/s²

m/s

14.

What object experiences uniform circular motion?

A car speeding up as it turns left

A car traveling around a roundabout at a constant speed

A car slowing down as it crests a tall hill

A car traveling down the road at a constant speed

15.

At the position shown in the diagram, which arrow indicates the direction of the centripetal acceleration of the cart?

16.

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

4.1 kg

3.6 kg

2.5 kg

1.8 kg

17.

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

10 N

20 N

30 N

40 N

18.

Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?

0.25 ms^-2

0.5 ms^-2

1 ms^-2

2 ms^-2

19.

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?

19.7 m/s

5.99 m/s

0.17 m/s

388.01 m/s

20.

A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the friction force required to keep the car from sliding?

9000 N

9800 N

300 N

3000 N

21.

A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What centripetal force must she exert to stay on if she is 1.25 m from its center?

120 N

240 N

480 N

960 N

22.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

23.

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.

2.4 m/s

3.6 m/s

3.9 m/s

4.2 m/s

24.

Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3 m/s if the ball weighs .12 kg and her arm is .65 meters long.

.38

1.23

.55

1.66 N

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Central Force

Total questions: 24

Worksheet time: 40mins

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