Answer:
F= 37.5 N ( Towards left)
Explanation:
Given that
m = 75 kg
initial velocity ,u= 5 m/s ( towards right)
The final speed ,v= 0 ( takes 10 s)
We know that
v = u + a t
a=acceleration
t=time
0 = 5 + a x 10
a= -0.5 m/s²
We know that force F
F= m a
F= 75 x (-0.5) N
F= - 37.5 N
Negative sign indicates that force will act opposite to the direction of motion .We can say that force act towards left side.
Magnitude of force ,F= 37.5 N ( Towards left)
