A 400 kg car is moving north with a velocity of, 20.0 m/s when it hits a car, who is traveling south, with a mass of 335kg and traveling a velocity
of 14.0 m/s. After the collision, the two cars stick together, what is the
final velocity of the cars as they travel together & what direction would
they be moving?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

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.