Question

a truck start from rest

Answer 1

HEY MATE..

HERE IS UR ANSWER...

The truck starts from rest, so initial velocity = 0

Distance travelled = 400 m

Time taken = 20 s

We know the equation of motion, S = ut + ½ at2

400 = 0 + ½ a × (20)2

a = 2 m/s2

Now, mass = 7 metric tonnes

= 7 × 1000

= 7000 kg

So force = mass × acceleration

F = 7000 × 2

= 14000 N

HOPE IT WILL HELP U...