A car is travelling at a velocity of 20m/s. After 30sec it covers a distance of 1200 m. Calculate the acceleration of the car and the final velocity of the car.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

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?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space. b. we'll know it immediately because it will be brighter than the full moon in the sky. c. we won't know about it until 600 years from now. d. none of the above.