Question

A truck start from rest and roll down with a constant acceleration. It travels a distance of 400m in 20s ,find its acceleration. Find the force acting on it if its mass is 7 metric tonnes ​

Answer 1

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Answer 2

Explanation:

GIVEN,

Distance travelled = 400 m

Time taken = 20 s

We know the equation

S = ut + ½ at2

Putting the value

400 = 0 + ½ a ×(20)2

a = 2 m/s square

Now,

mass = 7 metric tonnes

= 7 × 1000

= 7000 kg

we know the formula

So force = mass × acceleration

Putting the value

F = 7000 ×2

= 14000 N