Question

An object of mass 4kg initially at rest is acted upon by a force for 4s, it produces a uniform acceleration of 4 ms-2 calculate the final velocity of the object​

Answer 1

given

mass=4kg

u=0m/s

t=4sec

a=4m/s^2

Solution,

wkt,

a=v-u/t

4=v-0/4

16=v

v=16m/s

Answer 2

Answer:No need of mass so let’s keep it aside

So we have got initial velocity(u)=0

Acceleration=4m/s^2

Time=4s

To find final velocity(v)

So by using formula v=u+at

We get the answer

Substituting the values we get

V=0+4m/s^2*4s

Therefore v=16m/s

Therefore the final velocity of the object is 16m/s

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