Question

(v)A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance
Of 400 m in 20s. Find its acceleration. Find the force acting on it if its mass is 7 tonnes
(Hint: 1 tonne = 1000 kg)​

Answer 1

Answer:

Initial velocity =u=0

Distance =s=400m

time =t=20sec

a= acceleration

We know that,

Equation of motion:-

s=ut+21at2

400=0+21×a×20×20

400=200a

a=2

acceleration =a=2m/s2

Force =F=?

The force acting on the mass is 7 tonnes(∴1tonne=1000Kg)

Mass m=7×1000=7000Kg

Mass =m=7000kg

Acceleration =a=2m/s2

F=ma

=7000×2

=14000N

Force acting on it is 14000N

Answer 2

Answer:

March your answer

Explanation:

I hope help you