Question

a body starts from rest and acquires a velocity of 20 m/s in 2s. find acceleration
I am writing exam please ​

Answer 1

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Acceleration = Change in velocity per unit te.

Acceleration = Change in velocity per unit te.Therefore, Acceleration a. = 2s10m/s

2s10m/s

=5m/s 2

Answer 2

Answer:

a=10

Explanation:

using formula S=ut+1/2at^2

u=0

so, S= 1/2at^2....(eq1)

and v^2- u^2=2aS

20^2=2a(1/2at^2)

400=4a^2

100= a^2

a=10