tatemae.honne
Quiz by , created more than 1 year ago

This quiz covers the topics of angles, velocity, centripetal acceleration, periodic time, centripetal forces and kepler's third law. It tests knowledge learnt in the mind map on circular motion and the corresponding notes and flash card decks.

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Created by alex.examtime9373 about 10 years ago
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Circular Motion: Quiz

Circular Motion: Quiz

Question 1 of 10

1

What is the formula for an angle?

Select one of the following:

  • arc length/ radius

  • arc length/ time

  • radius x arc length

Explanation

Question 2 of 10

1

What is angular velocity measured in?

Select one of the following:

  • Radians

  • Metres/ second

  • Radians/ second

Explanation

Question 3 of 10

1

What is the direction of centripetal acceleration?

Select one of the following:

  • The direction in which the object is travelling

  • The opposite direction to which the object is travelling

  • Towards the centre of the circle

  • Away from the centre of the circle

Explanation

Question 4 of 10

1

Centripetal force is a scalar quantity.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 10

1

A man is riding a bicycle along a road at a constant speed. The wheels of the bike have a radius of 30cm and an angular velocity of 15 rad/s. What is the speed of the bicycle?

Select one of the following:

  • 2 m/s

  • 450 m/s

  • 4.5 m/s

  • 45 m/s

  • 20 m/s

Explanation

Question 6 of 10

1

According to Kepler's third law, the square of the periodic time of a satellite's orbit about a planet is inversely proportional to which of the following?

Select one of the following:

  • The mass of the planet

  • The radius of the planet

  • The distance between the planet and the satellite

Explanation

Question 7 of 10

1

A particle travels at at constant speed in a circle. What is its angular velocity if it completes 8 revolutions in 4 seconds?

Select one of the following:

  • 6 π rad/s

  • 6 rad/s

  • 2 rad/s

  • 2 π rad/s

Explanation

Question 8 of 10

1

Centrifugal force acts in the direction away from the centre of the circle.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 10

1

When a satellite is orbiting the earth, its linear velocity squared is proportional to which of the following?

Select one of the following:

  • R

  • 1/R

  • M

  • G

Explanation

Question 10 of 10

1

T = 2πr/v is the formula for centripetal acceleration

Select one of the following:

  • True
  • False

Explanation

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