Question

a truck starts from rest and roll down the hill with a constant acceleration . it travels a distance of 400 m in 20 sec . find acc and foce. mass= 7 tonnes

Answer 1

Answers

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

Explanation: