A roller coaster with a mass of 30 kg is sitting on the top of a hill that is 30 m tall. How much kinetic energy would the roller coaster have when it reaches the bottom of the hill
(n = 0)?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?