help me please

ball is thrown vertically downwards from the top of a building and bounces a few times as it its the ground. The velocity-time graph below describes the motion of the ball from the time t is thrown, up to a certain time T. 29.6 N velocity (m's") 4,955 7.71 time (s) 6.1. White down the speed with which the ball is thrown downwards. 6.2. All parts of the graph have the same gradient. Give a reason for this 6.3. Calculate the: 6.3.1. Height from which the ball is thrown. 6.3.2. Time ( T) shown on the graph. 6.4. Write down the: 6.4.1. Time that the ball is contact with the ground at the first bounce. 6.4.2. Time at which the reaches its maximum height after the first bounce. OPPO A15 3 @Shezzo's Android & 6.4.3. Value of X 6.5. Is the collision of the ball with the ground elastic or inelastic? give a reason for answer using information in the graph. 2022/01/27 17:35