A 47.4 kg student runs down the sidewalk and jumps with a

Last updated: 7/10/2022

A 47.4 kg student runs down the sidewalk and jumps with a horizontal speed of 4.2 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 3.95 m/s. Find the following: a. the mass of the skateboard b. how fast the student would have to run initially to have a final speed of 5.0 m/s.