2. The same boy who can throw a ball with a speed of 10 m/s is standing on the same train traveling at a constant speed of 10 m/s. The boy throws the ball to a friend at the front of the train car.
a. What is the speed of the ball according to the friend?
b. What is the speed of the ball according to an observer standing on the ground beside the train track?

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?