Question

A truck starts from rest and rolls down on a hill with a constant acceleration it travel a distance of 400m in 20 sec find its acceleration. Find the force acting on it if it's mass is 7 tonnes(1 tonne=1000kg)

Answer 1

Here u = 0

s = ut + 1/2 at² = 1/2 at²

400 = 1/2 a * 400

a = 2 m/s²

F = ma = 7 * 1000 * 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 metric tons = 7000 kg

Now,

Force = mass × acceleration

⇒ F= 7000 × 2 = 14000 N

I hope, this will help you.

Thank you______❤

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