What is the mass of a cart that has an acceleration of 5 m/s2 when a net force of 200 N is applied to it?*

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?