What is the linear momentum of a car of mass 1000 kg that is moving at a speed of 20 m/s? а
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50 kg m/s
0.02 kg m/s
20000 kg m/s
2000 kg m/s
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A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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.