Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 9

A car of mass m is travelling with a velocity v. The velocity of the car is increased by Δv due to a constant resultant force F acting for a time t. What is a correct expression for t?

1. At = (mv + mΔv)/F
2. Bt = mΔv/F
3. Ct = F/(mΔv)
4. Dt = F/(mv + mΔv)

As printed in the paper