Question

88 kg fullback moving east with a speed of 5.0 m/s is tackled by a 97 kg opponent running west at
3.0 m/s, and the collision is perfectly inelastic. What is the speed of the players just after the tackle?
A) 149 m/s
B) 23.1 m/s
C) 7.31 m/s
D) 0.81 m/s​

Answer 1

I think it is b. 231 ms

Answer 2

The speed of the players just after the collision is (D) 0.81 m/s

Inelastic collision:

Given that the mass of the fullback is m = 88kg

mass of the opponent, M = 97 kg

speed of the fullback, u = 5 m/s

speed of the opponent, U = 3 m/s

In an inelastic collision, the two bodies move together at the same speed and the total momentum of the system remains conserved.

Let the final speed be v, then by conserving the momentum we get:

mu - MU = (m + M)v

Since the opponent must be moving in opposite direction to the fullback, therefore his momentum is -MU.

88×5 - 97×3 = (88 +97)v

149 = 185v

v = 0.81 m/s

So both the players move with a speed of 0.81 m/s

Learn more about inelastic collision: https://brainly.com/question/2356330?referrer=searchResults