Question

ES
Mental Ability Physics Chemistry Biology Mathematics
Q No.: 71
An object starts to move from rest and after 2 seconds its velocity is 10m/sec. Find the
acceleration of the object.
O (A). 45m/second square
O(B) 10m/second square
O(C). 5m/second square
O (D). 20m/second square​

Answer 1

Answer:

Initial velocity, u = 0 (rest)

Final velocity, v = 10m/s

Time interval, t = 2 seconds

Therefore, a = (v - u)/t

= (10-0)/2

= 5m/s²

The correct option is ©

Answer 2

Answer:

5m/s^2 [ Option c ]

Explanation:

Object starts from rest, u=0

v= 10m/s

t= 2 sec

By first equation of motion---> v= u + at

10 = 0 + a(2)

a = 10/2

a = 5m/s^2

Hope you understand!

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