The position-time graph of a particle of mass 40 g is shown here. Which of the following statement is true about the graph?
(a) The particle receives an impulse of 8 x 10–4 kg m s–1 after every 1 s.
(b) The particle receives an impulse of 8 x 10–4 kg m s–1 after every 2 s.
(c) The particle receives an impulse of 4 x 10–4 kg m s–1 after every 1 s.
(d) The particle receives an impulse of 4 x 10–4 kg m s–1 after every 2 s.
how do we know the impulse?