Topic 5 - Forces

Question 1

Weight

Answer 1

Weight = Mass × Gravitational Field Strength

W = mg

Question 2

Work Done

Answer 2

Work done = Force x Distance

Question 3

Force

Answer 3

Force = Spring Constant x Extension

Force = change in momentum ÷ time taken

Question 4

Moment of a force

Answer 4

Moment of a Force = force x distance (perpendicular to the direction of the force)

Question 5

Pressure

Answer 5

pressure =
force normal to a surface ÷
area of that surface

Question 6

Distance Travelled

Answer 6

Distance Travelled = Speed x Time

Question 7

Acceleration

Answer 7

1) Acceleration = change in velocity ÷ time taken

2) Acceleration =
(final velocity - initial velocity) ÷
time taken

Question 8

Resultant Force

Answer 8

Resultant Force = Mass x Acceleration

Question 9

Momentum

Answer 9

Momentum = Mass x Velocity