Question

answer itt please guys​

Answer 1

Answer:

c) - 0.5 m/s²

Explanation:

U (initial velocity) = 10 m/s

V (final velocity) = 0 m/s

t (time taken) = 20s

a (acceleration) = (V – U) / t

a = 0 – 10 / 20

a = – 0.5 m/s2

Retardation = 0.5 m/s2

Answer 2

Answer:

Third option is correct

Explanation:

Given :

u = 10m/s, t = 20s, v = 0m/s

To find :

a = ?

[a will be negative as it is retardation]

Solution :

We, know that, v = u + at

0 = 10 + 20a

20a = -10

a = -1/2 m/s² = -0.5 m/s2

Hope it helps

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