8. the velocity of a car reduces from 30 km/h to 5 km/h as the car approaches a stop sign. this is an example of ( positive / negative ) acceleration. (circle the correct answer from the parenthesis)

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

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.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?