Author Question: Three masses are moving along the x-axis. Their masses and velocities are m1 = m with v1 = v, m2 = ... (Read 76 times)

Zoey63294 · **on:** Jul 28, 2018

Three masses are moving along the x-axis. Their masses and velocities are m1 = m with v1 = v, m2 = 2m with v2 = 2v, and m3 = 3m with v3 = 3v (the minus sign indicating this velocity is in the negative x-direction). The three masses collide and stick together in a completely inelastic collision. What is the resultant velocity of the combined mass?
a. 0, since their combined momentum is zero.
b. 2v/3
c. 14v/3
d. v

Question 2

Mitch throws a 130-g lump of clay at a 590-g target, which is at rest on a horizontal surface. After impact, the target, including the attached clay, slides 2.8 m before stopping. If the coefficient of friction is = 0.50, find the speed of the clay before impact.
a. 6.4 m/s
b. 33 m/s
c. 29 m/s
d. 0.62 m/s
e. 34 m/s