Help please this is about dialysis and etc pt.2

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes