21. How do you calculate momentum?
A m=mv 8. map
C. pomy D. pa pv
22. What is the unit for momentum?
A. kg m/s B. m/s C. m/s2 D. Joule
23. Which has more momentum, a huge car that is not moving or a small cart that is
moving? A. Huge car that is not moving C. Both has the same momentum
B. A smail cart that is moving D. None of the above
24. Two cars, one twice as heavy as the other, moves down a hill at the same time.
The heavier car would have a
momentum
Aless B. equal C. same D. twice
25. What are the two factors does momentum depend on?
A. inass and velocity B. velocity and acceleration C. speed and weight D. gravity and force
_26. A ball is lifted to some height and then dropped. Which of the following increases
when the bail is dropped?
A, kinetic energy
B. elastic potential energy
C. total mechanical energy D. gravitational potential energy
27. What is a foule?
A. It is a unit of work,
8. It is equivalent to kg m2 / 32
C. It is equivalent to newton-meter D. It is equivalent to m/s2
_28. On a roller coaster, where is maximum kinetic energy?
A. at the top of a big hill C. when going upside down
B. at the bottom of a big hili D. when going around a corner
29. Where does most potential energy exist on roller coaster?
A. the top of the coaster 3. The middle of the coaster
C. the bottom of the coaster D. it is the same anywhere on the coaster
30. On a roller coaster, where is maximum potential energy?
A, at the top of a big hill
Bat the bottom of a big hill
C. when going upside down D. when going around a comer
31. tt is a closed surface surrounding a system through which energy and mass may
enter or leave the system
A. System B. Surroundings C. Boundary D. Universe
32. It is a system wherein in no matter enters or leaves the system. It only interacts
with its surroundings in terms of energy transfers.
A. Closed system B. Open system C. Isolated system D. None of them
_33. It is a form of energy that "flows" from a region of high temperature to a region of
low temperature. A heat 3.work C force D. distance
34. It is the energy transferred when an object is moved against force.
A. heat 8. work C. internal energy D. thermodynamics
35. What is the primary energy or fuel of a hydroelectric power plant?
A. Coat B. Fossil fuel C. Oil D. Water
36. What is the most essential part of a power plant that is used to reduce the heat of
the water?
A. Cooling tower B. Generator C. Nuclear reactor D. Turbine