QUESTIONS:

1) In Physics, Work = ____________  . _____________(in words) or W = _____ . _______ (use only symbols like F for force)

2) So if you push a boulder, but the boulder does not move, are you doing any work on it ? _______

3) Unit for displacement is _________, unit for force is ___________ so unit for work is ____________ or _______(J)

4) What is the work done by Forest Gump if he pushes a chocolate by 0.3m, the force og magnitude 5N  makes a 30 degrees angle with the horizontal ?
Use: W = F x D cos(30) = ______________________ J

5) What is the expression of the work done against gravity: W = __________

6) Bill lift a safe to the top of a building. THe work done is 9, 600J, the height of the building is 16m, what is the weight of the safe? its mass?

7) What is the expression of power ? P=  _________ , the unit of power ________

8) Bill lift a tool box over a height of  1.5m, the mass of the tool box is 5kg and it took him 1.5s to perform that job. That is the power produced
by lifting the box ? P _____________W

9) What is the work-kinetic energy principle ?
___________________ = _____________________

10) A race car produce 3 E5 W of power.  what is the work done by the engine on the car in 4 seconds ?
w = _________ J.  What is the final kinetic energy ? KEf = _________________ J

11) THe power is the rate _____________________________________________________

12) KE = ___________ (use m, V)