GCSE Physics: Forces & Motion

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, measured in newtons (N). It is calculated as the mass of the object multiplied by the acceleration due to gravity (W = m × g).

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated using the formula: W = F × d, where F is the force applied and d is the distance moved in the direction of the force.

Front

What is the difference between mass and weight?

Back

Mass is a measure of the amount of matter in an object, measured in kilograms (kg), while weight is the force acting on that mass due to gravity, measured in newtons (N).

Front

What is equilibrium in physics?

Back

Equilibrium occurs when the net force acting on an object is zero, meaning all forces are balanced and the object is either at rest or moving at a constant velocity.

Front

What happens to an object when two forces act in the same direction?

Back

When two forces act in the same direction, they combine to create a larger net force, causing the object to accelerate in that direction.

Front

What is the unit of force?

Back

The unit of force is the newton (N).

Front

How does friction affect motion?

Back

Friction is a force that opposes motion between two surfaces in contact. It can slow down or stop moving objects.

Front

What is the relationship between distance and speed?

Back

Speed is defined as the distance traveled per unit of time. The formula is: Speed = Distance / Time.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, measured in meters per second squared (m/s²). It occurs when an object speeds up, slows down, or changes direction.

Front

What is the effect of mass on gravitational force?

Back

The gravitational force between two objects increases with greater mass. The formula is: F = G × (m1 × m2) / r², where G is the gravitational constant.