A 51.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 250 N . For the first 10.0 m the floor is frictionless, and for the next 11.0 m the coefficient of friction is 0.21. What is the final speed of the crate?

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

The discovery of the electron as a subatomic particle was a result of