Extras

Question 1

Impulse

Answer 1

Change in momentum experienced by a particle

I = Δp =FΔt

Question 2

Friction f=

Answer 2

f=μN

Question 3

Power (mechanical)

P=

Answer 3

P = W/t 
P = ΔE/t 
P = Fν

Question 4

Torque τ =

Corresponding concept of force In rotational motion

Answer 4

τ = rFsinθ
τ = Ια
(inertia x angular acc.)