Question

1. A 5-kg ball moving with a velocity of 8m/s collides head-on with another ball of 2-kg mass and initially at rest. After impact the first mass is still moving in the same direction, but with a velocity of 4 m/s. calculate:
a. The velocity of the second mass after impact;
b. The initial kinetic energy;
c. The total kinetic energy after impact;
d. The energy loss during impact;
e. The relative velocity of approach before impact; and
f. The relative velocity of separation after impact.

Answer 1

Answer:

b)the initial kinetic energy,

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Answer 2

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