Question

a constant forc act on body of mass 100g for 4 sec the body starting form rest cover distance of 0.64m during this time find force?

Answer 1

Mass, m = 100g

time taken, t = 4 s

distance, d = 0.64m

velocity, v = d/t = 0.64/4 = 0.16 m/s

acceleration, a = v/t = 0.16/4 = 0.04 m/s square

therefore, Force, F = ma = 100 x 0.04 = 4N

Answer 2

Explanation:

f- constant

m-100g -0.1 kg

t-4s

u-0

s-0.64m

f-?

s-ut+1/2at²

0.64= 1/2a*4*4

0.64=8a

a=0.08m/S2

F=m*a

=0.1*0.08

F=8*10-³