HELP ME ASAP PLEASE
A car with mass 1000kg moving to the right with a velocity of 4m/s hits an 800kg car moving to the left with a velocity of 3m/s. If the second car moves 2m/s to the right. What is the velocity of the first car after the collision?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents