Question

(a) A train (c) 5 rupees coin grupees con A truck starts from rest and rolls down a hat with a constant acceleration. It travels a distance of 400 m in 20s. Find the force acting on it if its mass is 5 tonnes (Hint: 1 tonne = 1000 kg) (a) 20000 N b) 10000 N (c) 12000 N (d) 10500 N​

Answer 1

Speed = ∆v - ∆u = distance/time

= 400/20

= 20 m/s

a = ∆v - ∆u/t

= 20/20

= 1 m/s²

then ,

5 tonne = 5 • 1000

= 5000 kg

By using

F = m • a

⇒ 5000 • 1

⇒ 5000N