engineering recuitment HAL Management & Design Trainee Mock Test 2023 Engineering Mechanics Impact and Virtual Work Impact
A spherical ball weighing 2 kg is dropped from a height of 4.9 m onto an immovable rigid block as shown in the figure. If the collision is perfectly elastic, what is the momentum vector of the ball (in kg m/s) just after impact?
Take the acceleration due to gravity to be 𝑔 = 9.8 m/s2. Options have been rounded off to one decimal place.
1
19.6 𝒊̂
2
19.6 𝒋̂
3
17.0 𝒊̂+ 9.8 𝒋̂
4
9.8 𝒊̂+ 17.0 𝒋̂