Question

Object B is at rest when object A collides with it. The collision is one-dimensional and elastic. After the collision object B has half the velocity that object A had before the collision. (a) Which object has the greater mass? (b) How much greater? (c) If the velocity of object A before the collision was 6.0 m/s to the right, what is its velocity after the collision?

Answer 1

a)

$$m_b>m_a$$

b)

$$m_b=3m_a$$

c)

$$v_a'=3\frac{m}{s}$$