The braking distance (in meters) for a certain car moving at velocity (in meters/second) is given by. The car's velocity (in meters/second) seconds after starting is given by. Write a formula for the braking distance (in meters) after seconds. It is not necessary to simplify.

Question

Mathematics

Marin Baxter

9 November, 15:16

The braking distance (in meters) for a certain car moving at velocity (in meters/second) is given by. The car's velocity (in meters/second) seconds after starting is given by. Write a formula for the braking distance (in meters) after seconds. It is not necessary to simplify.

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Answers (1)

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Nylah Mcgrath · Answer 1

s = - u²/2a

Step-by-step explanation:

v² = u² + 2as

Where,

v = 0

u is the velocity it was moving with

a = deceleration = Braking force/mass

Therefore,

0 = u² + 2as

s = - u²/2a

This is positive because a is negative