Question

a truck starts from rest and Rolls down a hill with a constant acceleration. it travel a distance of 400m in 20 seconds. finds its acceleration. find the force acting on it if its mass is seven tonnes.

Answer 1

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

Answer 2

☺ Hello mate__ ❤

◾◾here is your answer...

u = 0 m/s

t = 20 s

s = 400 m

According to the second equation of motion:

s = ut + 1/2 at^2

400 = 0 + 1/2 × a × (20)^2

a = (400 × 2 )/400 = 2m/s^2

7 tons = 700 kg

Now,

Force = mass × acceleration

⇒ F= 700 × 2 = 1400 N

I hope, this will help you.

Thank you______❤

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