Physics: Uniform Circular Motion

1.

Multiple Choice

1 min

1 pt

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

Period

Frequency

Angular velocity

2.

Multiple Choice

1 min

1 pt

Centripetal acceleration always points

in the direction of the object's motion

in the opposite direction of the object's motion

towards the center of the circle

towards the outside of the circle

3.

Multiple Choice

1 min

1 pt

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

up

right

down

left

4.

Multiple Choice

5 mins

1 pt

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

5.

Multiple Choice

1 min

1 pt

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

outwards

towards the center

tangent

faster

6.

Multiple Choice

1 min

1 pt

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

Friction

Centripetal Force

Gravity

Inertia

7.

Multiple Choice

1 min

1 pt

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

a_c= v²/r

0.25 ms^-2

0.5 ms^-2

1 ms^-2

2 ms^-2

8.

Multiple Choice

1 min

1 pt

Centrifugal force is a ______

force that pushes you to the outside of a circle during uniform circular motion.

fictitious force that is really just the linear momentum of an object in uniform circular motion.

The force that keeps the planets in orbit

9.

Multiple Choice

1 min

1 pt

What's the centripetal acceleration of an object traveling 2 m/s around a circle of diameter 1 m?

4 m/s²

8 m/s²

10 m/s²

16 m/s²

10.

Multiple Choice

1 min

1 pt

What is the velocity formula for uniform circular motion?

11.

Multiple Choice

1 min

1 pt

what is the centripetal acceleration formula?

12.

Multiple Choice

1 min

1 pt

Centripetal acceleration is ...

Acceleration toward the center of a curved or circular path

Acceleration toward the outside of a circle

Vertical motion instead of horizontal motion

13.

Multiple Choice

1 min

1 pt

A toy car is following a circular path with a constant speed of v=3 m/s . If the radius of the circular path is 1 m, find The centripetal acceleration of the car

30 m/s²

3 m/s²

9 m/s²

6 m/s²

14.

Multiple Choice

1 min

1 pt

Which of the following is the unit for centripetal force?

J

m/s²

kg⋅m/s

N

15.

Multiple Choice

1 min

1 pt

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?

Explore this activity with a free account