PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A 2kg ball is initially at rest. The net horizontal force acting on it varies with time as shown in the table.
Time interval (s) | Net force F (N)
0–1 | 6
1–3 | 0
3–5 | −4
(a) Draw a force–time graph for the ball using the data given.
(b) Calculate the change in momentum of the ball in each interval and hence find the total change in momentum after 5 s.
(c) Determine the velocity of the ball at t=5s.
(d) What is the average net force acting on the ball over the entire 5 s?