... Gradient of this graph is the time taken for the block to fall from the bench to the ground. Analysis: Gradient of the graph is roughly constant. Conclusion: Time taken for the block to fall from the bench to the ground is constant. This shows that the horizontal motion does not affect the falling time. This is because no matter what horizontal launching speed, the initial vertical speed is zero. Only considering the vertical motion, initial velocity (zero), acceleration (gravity), and displacement (height of bench) are constant. Hence, using: With u, a, s constant, t is constant. Human errors: 1. The launcher's hand had not left the wooden block when the block passed through the light source, hence it was still accelerating when the reading was taken, making the launching speeds calculated inaccurate. 2. As the block bounced and glided on the ground before stopping, the point on which the wooden block landed was not identified correctly, so ...

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