Question

2000 kilogram of vehicle moving with a speed of 20 metre per second square is brought to rest in a distance of 40 m find acceleration and force​

Answer 1

Answer :-

As given :-

Mass = 2000 kg

Speed = 20 m/s

Distance = 40 m

Final velocity = 0

Now as we know that

v² = u² + 2as

→ (0)² = (20)² + 2a(40)

→ 0 = 400 + 80a

→ -400 = 80a

→ -400 ÷ 80 = a

→ a = -5 m/s

Now as we also know that

F = ma

or

Force = mass × acceleration

→ F = (2000) × (-5)

→ F = -10000 N