A baseball is thrown upward at 20 m/s. It takes 15.5 s before the baseball strikes the ground. Neglect air resistance.

a. How high above the ground was the baseball when it was thrown?
b. What is the velocity of the baseball just before it hits the ground?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion