Question

a truck starts from rest and Rolls down a hill with a constant acceleration Travels a distance of 400 m into 20 seconds find its acceleration find the force acting on it if its mass is 7 tons

Answer 1

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SOLUTION :-
=>The truck starts from rest, so initial velocity = 0m/s.

=> Distance covered = 400 m

=>Time taken = 20 s

We know that, S = ut +1/2at^2

=>400 = 0 + 1/2a * (20)^2

=>a = 2 m/s^2

=>Given,
=>Mass = 7 metric tons
We know that 1 metric ton is 1000kg therefore,

=> 7 * 1000

=>7000 kg

Force = Mass * acceleration

F = 7000 * 2

F= 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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