# physics

The velocity of a sprinter is 9m / s. After 4 seconds, his velocity become zero. If acceleration is taken to be uniform. Find its value

1. 👍 0
2. 👎 0
3. 👁 143
1. Acceleration = (vf-vi)/t
=(0-9)/4
= -2.25 m/s²

1. 👍 0
2. 👎 0

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