A heavy truck moving with a velocity of 60 km h-1 collides with a light drum at rest. If the collision be elastic, then the velocity of the drum immediately after collision will be

Question

A heavy truck moving with a velocity of 60 km h-1 collides with a light drum at rest. If the collision be elastic, then the velocity of the drum immediately after collision will be (A) zero (B) 60 km h-1 (C) 120 km h-1 (D) uncertain

Tardigrade Admin · Accepted Answer

In an elastic collision of a very heavy body with a very light body at rest, the speed of lighter body becomes twice the speed of the heavier body, i.e., v2 = 2u1 = 120 km h-1 .

Q. A heavy truck moving with a velocity of $60 km h^{- 1}$ collides with a light drum at rest. If the collision be elastic, then the velocity of the drum immediately after collision will be

zero

$60 km h^{- 1}$

$120 km h^{- 1}$

uncertain

In an elastic collision of a very heavy body with a very light body at rest, the speed of lighter body becomes twice the speed of the heavier body, i.e., v₂ = 2u₁ = 120 km h^-1 .

Q. A heavy truck moving with a velocity of 60kmh−1 collides with a light drum at rest. If the collision be elastic, then the velocity of the drum immediately after collision will be