Question

1. A body of mass 500 g, initially at rest, is acted upon
by a force which causes it to move a distance of 4
m in 2 s, Calculate the force applied.
Ans. 1 N​

Answer 1

Answer:

1N

Explanation:

m=500g = u=0 s=4m t=2s

To calculate force

F=ma

Now we need to calculate acceleration

s=ut+1/2at²

4=0×2+1/2a×(2)²

4=0+1/2a×4

4=½a×4

4/4=1/2a

1=1/2 a

1×2= a

a=2

Mass units is kgs

but given mass is in g

We need to change it

M=500g=500/1000kg

F=ma

F=500/1000×2

F=1/2×2

F=1N