Question

A 400 N force is applied on a body of mass 50 kg how much time will the body take to travel 64 m from rest​

Answer 1

Answer:

Initial velocity (u) =0m/s

Distance traveled (t) =unknown

Force (f) =400n

Mass(m) =50kg

but force=mass*acceleration

F=ma

400n=50kg*a

A=400/50

a=8m/s

using the relation

s=ut+ 1/2at^2

64=0+(t)+1/2(8) (t) ^2

64=0+4t^2

64=4t^2

64/4=t^2

t^2 =16

t=√16

t=+4or -4

but time can't be negative hence, answer is +4

Hope this helps

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