A ball moves in a straight line so that its momentum varies with time as follows: it…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum
Problem
A ball moves in a straight line so that its momentum varies with time as follows: it increases uniformly from 0 to 6 kg·m·s⁻¹ in the first 2 s, remains constant for the next 1 s, and then decreases uniformly to −3 kg·m·s⁻¹ in the following 3 s.
(i) Calculate the average force acting on the ball during: (a) the first 2 s, (b) the next 1 s, and (c) the final 3 s.
(ii) Find the net impulse delivered to the ball over the entire 6 s period.