7. The motion of a cart of mass 25 kg is represented in a momentum-time graph. a) Determine the impulse delivered to 100 the 25 kg cart. momentum (kg-m/s) 80 60 40 20 time (s) 1.0 2.0 a) 1 mark b) What overall force acted on the cart? b ) 2 marks c) Determine the change in velocity of the cart's motion. C) 2 marks Page 5 of 13