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. \(v=dt\)
  3. \(v=\frac{t}{d}\)
  4. \(v=d-t\)

Question 2

A runner travels \(150\,\mathrm{m}\) in \(30\,\mathrm{s}\). What is the average speed?
  1. \(5\,\mathrm{m/s}\)
  2. \(4500\,\mathrm{m/s}\)
  3. \(180\,\mathrm{m/s}\)
  4. \(0.2\,\mathrm{m/s}\)

Question 3

What does a horizontal line on a distance-time graph show?
  1. Zero speed
  2. Constant non-zero speed
  3. Increasing speed
  4. Decreasing speed

Question 4

Trains move 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. \(600\,\mathrm{m/s}\)
  4. \(1.5\,\mathrm{m/s}\)

Question 5

What is the resultant when forces are balanced?
  1. \(0\,\mathrm{N}\)
  2. The object's weight
  3. The largest force
  4. The sum of all forces

Question 6

A non-zero resultant force directly changes which quantity?
  1. Velocity
  2. Mass
  3. Volume
  4. Gravitational field strength

Question 7

What is a moment?
  1. Turning effect of a force
  2. Stretching effect of a force
  3. Resultant of two forces
  4. Pressure caused by a force

Question 8

Hooke's law applies. Force doubles. What happens to extension?
  1. It doubles
  2. It halves
  3. It stays unchanged
  4. It quadruples

Question 9

Which equation defines pressure \(P\)?
  1. \(P=\frac{F}{A}\)
  2. \(P=FA\)
  3. \(P=\frac{A}{F}\)
  4. \(P=F+A\)

Question 10

What happens to liquid pressure as depth increases?
  1. It increases
  2. It decreases
  3. It stays constant
  4. It depends on container width

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 kind of forces are air and water resistance?
  1. Drag forces
  2. Upthrust forces
  3. Tension forces
  4. Gravitational forces

Question 15

For an object floating at rest, how do upthrust and weight compare?
  1. They are equal
  2. Upthrust is greater
  3. Weight is greater
  4. Both are zero

Question 16

What happens to atmospheric pressure as altitude increases?
  1. It decreases
  2. It increases
  3. It stays constant
  4. It first rises then falls

Question 17

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

Question 18

What represents force magnitude on an arrow diagram?
  1. Arrow length
  2. Arrow direction
  3. Arrow position
  4. Arrow colour

Question 19

What does a straight force-extension graph through the origin show?
  1. Force and extension are proportional
  2. Extension is independent of force
  3. The spring has no stiffness
  4. Force decreases as extension increases

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

Question 21

Acceleration is the rate of change of what?
  1. Velocity
  2. Distance
  3. Force
  4. Mass

Question 22

Cars approach at 12 m/s and 8 m/s. What is their relative speed in m/s?
  1. 20
  2. 4
  3. 8
  4. 96

Question 23

On a distance-time graph, what does a steeper line show?
  1. Greater speed
  2. Lower speed
  3. Changing speed
  4. Zero speed

Question 24

What does a curved distance-time graph usually show?
  1. Changing speed
  2. Constant speed
  3. Zero speed
  4. Changing direction

Question 25

A resultant force acts opposite to an object's motion. What happens?
  1. It slows down
  2. It speeds up
  3. It keeps the same velocity
  4. It changes mass

Question 26

A resultant force acts in an object's direction of motion. What happens?
  1. It speeds up
  2. It slows down
  3. It changes direction only
  4. It keeps constant speed

Question 27

Wide tyres reduce ground pressure by increasing what?
  1. Contact area
  2. Vehicle weight
  3. Gravitational field strength
  4. Tyre density

Question 28

What is a lever's turning point called?
  1. Pivot
  2. Effort
  3. Load
  4. Arm

Question 29

A force of \(20\,\mathrm{N}\) acts \(0.50\,\mathrm{m}\) from a pivot. What is its moment?
  1. \(10\,\mathrm{N\,m}\)
  2. \(40\,\mathrm{N\,m}\)
  3. \(20\,\mathrm{N\,m}\)
  4. \(0.025\,\mathrm{N\,m}\)

Question 30

Why can a streamlined helmet help a cyclist move faster?
  1. It reduces air resistance
  2. It increases tyre grip
  3. It reduces bicycle mass
  4. It increases pedalling force

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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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