Question

a 75 kg object traveling at 4 m/s collides with and sticks to a 125 kg object initially at rest, what is the final velocity of the two objects?

Answer 1

1.5m/s

Step-by-step explanation:

Given parameters:

M1 = 75kg

V1 = 4m/s

M2 = 125kg

V2 = 0m/s

Unknown:

Final velocity of the two objects = ?

Solution:

To solve this problem, we must understand that this is an inelastic collision. To conserve momentum;

M1 V1 + M2 V2 = V (M1 + M2)

( 75 x 4 ) + ( 125 x 0) = V (75 + 125)

300 = 200V

V = 1.5m/s