2.3c Ex1 MJ15 P21 Q2 Ball Rebound Velocity Graph | AS Kinematics | Cambridge A Level 9702 Physics

Example 1 - 9702/21/M/J/15: (a) Define speed and velocity and use these definitions to explain why one of these quantities is a scalar and the other is a vector. #9702s15p21 #ASfreefallP2 #ASreboundP2 #Lv2

(b) A ball is released from rest and falls vertically. The ball hits the ground and rebounds vertically, as shown in Fig. 2.1. The variation with time t of the velocity v of the ball is shown in Fig. 2.2. Air resistance is negligible.

(i) Without calculation, use Fig. 2.2 to describe the variation with time t of the velocity of the ball from t = 0 to t = 2.1 s.

(ii) Calculate the acceleration of the ball after it rebounds from the ground. Show your working.

(iii) Calculate, for the ball, from t = 0 to t = 2.1 s, the distance moved, and the displacement from the initial position

(iv) On Fig. 2.3, sketch the variation with t of the speed of the ball. #ASphysicsGraphsP2

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