Question

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?

Answer 1

Answer:

6.25m/s²

Explanation:

v²-u²=2as

0-225= -2×a×18

225= 2×a×18

=36a

a=225/36

=6.25m/s²