Changes in Momentum

What happens if an object’s moving or able to move?

An unbalanced force acting on it will change its momentum.

What’s the word and symbol equation which includes force, momentum and time?

force= change in momentum/time and F=m∆v/t

What’s the word and symbol equation for braking force?

Braking force = mass × acceleration and F=ma

What’s the word and symbol equation for acceleration?

Acceleration = change in velocity/ time taken and a=∆v/t

What happens for the greater the time taken for the change in momentum of an object?

The smaller the rate of change of momentum and the smaller the force it experiences.

What does it mean for the time taken for the change in momentum?

The force acting on an object is equal to the rate of change of momentum of the object.

What do vehicle safety features increase?

The time taken for the change in momentum.

What vehicle safety features are used in cars?

Air bags, seat belts and crumple zones.

What vehicle safety features are used for cycling?

Cycling helmets

What vehicle safety features are used for gymnastics?

Crash mats