Equations for Forces

Question 1

Acceleration

Answer 1

Acceleration (a)=Change in velocity(Δv)​ / Time taken(t)

Question 2

Force

Answer 2

Force (F)=Mass (m) x Acceleration (a)

Question 3

Momentum

Answer 3

Momentum (p)=Mass (m) × Velocity (v)

Question 4

Impulse (Change in Momentum)

Answer 4

Impulse=Force (F)×Time (t)

Question 5

Moment of a Force (Turning Effect)

Answer 5

Moment=Force (F) × Perpendicular Distance from Pivot (d)

Question 6

Hooke’s Law (Force and Extension of a Spring)

Answer 6

Force (F)=Spring Constant (k) × Extension (e)

Question 7

Stopping Distance

Answer 7

Thinking Distance+Braking Distance

Question 8

Rate of change of momentum

Answer 8

Force (F) = Change in momentum (Δp) ​​/ Time (t)

Question 9

Fluid Mechanics (Buoyancy)

Answer 9

Upthrust=Weight of Displaced Fluid

Upthrust (U)= Density of fluid (ρ) x Gravitational Field Strength (g) x Volume of fluid displaced (V)

Question 10

Pressure-Force-Volume Relationship (Boyle’s Law)

Answer 10

P1 ​x V1​=P2 ​x V2​