Motion and Forces questions

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Motion and Forces question collection

Review Motion and Forces questions for Physics, with correct answers shown and coverage across speed, distance and time; distance-time graphs; balanced and unbalanced forces.

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Question 1

Which equation gives average speed \(v\)?
  1. \(v = \frac{d}{t}\)
  2. \(v = d \times t\)
  3. \(d = \frac{t}{v}\)
  4. \(v = \frac{F}{A}\)

Question 2

A runner travels \(150\,\mathrm{m}\) in \(30\,\mathrm{s}\). What is the average speed?
  1. \(5\,\mathrm{m/s}\)
  2. \(4\,\mathrm{m/s}\)
  3. \(6\,\mathrm{m/s}\)
  4. \(180\,\mathrm{m/s}\)

Question 3

On a distance-time graph, what does a horizontal line mean the object is doing?
  1. Stationary
  2. Speeding up
  3. Moving at constant speed
  4. Slowing down

Question 4

Two trains travel in the same direction at \(30\,\mathrm{m/s}\) and \(20\,\mathrm{m/s}\). What is their relative speed?
  1. \(10\,\mathrm{m/s}\)
  2. \(50\,\mathrm{m/s}\)
  3. \(25\,\mathrm{m/s}\)
  4. \(5\,\mathrm{m/s}\)

Question 5

If forces on an object are balanced, what is the resultant force?
  1. \(0\,\mathrm{N}\)
  2. \(1\,\mathrm{N}\)
  3. Equal to the object's weight
  4. Always upwards

Question 6

What can a non-zero resultant force on an object cause it to do?
  1. Change speed or direction
  2. Stay in equilibrium
  3. Lose mass
  4. Have zero acceleration

Question 7

What is a moment?
  1. The turning effect of a force about a pivot
  2. The speed of a moving object
  3. Energy transferred each second
  4. The pressure in a liquid

Question 8

Hooke's law \(F = kx\) holds. If the force doubles, what happens to the extension?
  1. The extension doubles
  2. The extension halves
  3. The mass doubles
  4. The extension stays the same

Question 9

Which equation defines pressure \(P\)?
  1. \(P = \frac{F}{A}\)
  2. \(P = F \times A\)
  3. \(P = \frac{m}{V}\)
  4. \(P = \frac{d}{t}\)

Question 10

What happens to pressure in a liquid as depth increases?
  1. It increases
  2. It decreases
  3. It stays constant at all depths
  4. It becomes zero

Question 11

What is the unit of force?
  1. Newton (N)
  2. Joule (J)
  3. Pascal (Pa)
  4. Watt (W)

Question 12

A \(12\,\mathrm{N}\) force acts right and an \(8\,\mathrm{N}\) force acts left. What is the resultant force?
  1. \(4\,\mathrm{N}\) to the right
  2. \(20\,\mathrm{N}\) to the right
  3. \(4\,\mathrm{N}\) to the left
  4. \(0\,\mathrm{N}\)

Question 13

Which force opposes motion between two touching surfaces?
  1. Friction
  2. Upthrust
  3. Weight
  4. Magnetic attraction

Question 14

What are air resistance and water resistance examples of?
  1. Drag forces
  2. Contact moments
  3. Balanced pressures
  4. Static electric fields

Question 15

Which statement is true for an object floating at rest in water?
  1. Upthrust equals weight
  2. Upthrust is greater than weight
  3. Weight is zero
  4. There is no pressure from the water

Question 16

What happens to atmospheric pressure as altitude increases?
  1. It decreases
  2. It increases
  3. It stays exactly the same
  4. It becomes equal to water pressure at any depth

Question 17

Which is a non-contact force?
  1. Gravity
  2. Friction
  3. Tension in a rope
  4. Upthrust in a liquid

Question 18

How should the size of a force be shown on a force-arrow diagram?
  1. By the length of the arrow
  2. By the color of the arrow
  3. By always drawing arrows the same size
  4. By using circles instead of arrows

Question 19

Hooke's law states \(F = kx\). If a spring is stretched beyond the limit of proportionality, what happens to the force-extension relationship?
  1. It no longer gives a linear force-extension relationship
  2. It still applies exactly with a straight-line graph
  3. The spring returns instantly to zero length
  4. The unit of force changes from N to Pa

Question 20

Work done on a spring increases which store in the spring?
  1. Elastic potential energy store
  2. Nuclear energy store
  3. Magnetic energy store
  4. Chemical energy store

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Review Motion and Forces questions for Physics, with correct answers shown and coverage across speed, distance and time; distance-time graphs; balanced and unbalanced forces.

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