A skydiver of mass 80.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 50.0 m/s. Required:
1. What is her acceleration when her speed is 30.0 m/s?
2. What is the drag force on the skydiver when her speed is:

a. 50.0 m/s
b. 30.0 m/s?

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 energy released by a nuclear fusion reaction is produced when

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?