2) Two objects, A and B, initially at rest, are "exploded" apart by

2) Two objects, A and B, initially at rest, are "exploded" apart by the release of a coiled spring that was compressed between them. As they move apart, the velocity of object A is 5 m/s and the velocity of object B is -2 m/s. What is the ratio of the mass of object A to the mass of object B (mA/mB)?

4 answers

Write an equation that says the final momentum is zero. Zero was also the initial momentum, and it stays the same.

0 = mA*5 - mB*2

Solve for mA/mB

2/1

2/5