A cyclist is travelling at 15m/s. she applies brakes so that she does not collide with a wall 18 m away. What deceleration must she have so that she does not collide?
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Answer:
6.25m/s²
Explanation:
v²-u²=2as
0-225= -2×a×18
225= 2×a×18
=36a
a=225/36
=6.25m/s²
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