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please tell

A cyclist is travelling at 15 m sl. She applies brakes so that she does not collide with a wall 18 m away,

W

Question

please tell

A cyclist is travelling at 15 m sl. She applies brakes so that she does not collide with a wall 18 m away,

What deceleration must she have ?

1. Draw a velocity-time graph to show the following motion :

A car accelerates uniformly from rest for 5 s; then it travels at a steady velocity for 5 s.

2 The velocity-time graph for part of a train journey is a horizontal straight line. What does this tell you about

(a) the train’s velocity, and (b) about its acceleration ?

sorry it’s of science I accidently clicked maths

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Mathematics
3 months
2021-07-25T18:12:49+00:00
2021-07-25T18:12:49+00:00 2 Answers
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## Answers ( )

Answer:6.25m/s

2

Step-by-step explanation:Initial velocity, u=15m/s

Final velocity, v=0m/s

Distance, s=18m

Acceleration, a=?

Using relation, v

2

−u

2

=2as

0

2

−(15)

2

=2a×18

−225=36a

a=

36

−225

=−6.25m/s

2

So, deceleration is 6.25m/s

2

.

Answer:please

Step-by-step explanation:Ans another question

I will mark u brainlliest