Please note that this problem has 2 parts. 2 unknows in conservation of momentum
ID: 1701092 • Letter: P
Question
Please note that this problem has 2 parts.2 unknows in conservation of momentum and 2 unknows in conservation of kinetic energy
Walt and Wolfie collide in bumper cars of mass 50 kg each. Walt has a mass of 60 kg, and Wolfie has a mass of 80 kg. Walt strikes Wolfie from the rear at V = 7.9 m/s. If the collision is elastic, and Wolfie is initially at rest, what is Wolfie's speed after the collision (in m/s)? Assume that the collision is "one-dimensional", i.e., all the motion is in the "x" direction.
Explanation / Answer
If the collision is elastic then According to the conservation of momentum
m1v1 = m2v2
v2 = m1v1/m2
= 60*7.9/80
= 5.9 m/s
After collision the velocity of Wolfie is 5.9 m/s