20. Riding a bicycle and using of wheelbarrow (kariton) are examples of
A Fluid friction B. Rolling friction C. Sliding friction D. Statie friction
21. Which of these will have the strongest gravitational pull on Earth?
A. a baby
C. a drinking glass
B. a half sack of rice
D. an elephant
22. Without air resistance, all objects fall at the same rate.
A. True
B. False
C. Maybe
D. Neither True or False
23. The gravity between two objects increases as the distance between them
A. decreases
B. increases
C. neutralizes
D. stabilizes
24. Reyna turns on the flashlight to see his things. What form of energy does a flashlight produce?
A. chemical energy B. light energy
C. sound energy
D. thermal energy
25. What energy transformation occurs when you turn on a flashlight?
A. mechanical ---electrical heat- --light
B. chemical electrical--- --light- heat
C. chemical -light electrical heat
D. electrical -light chemical
-heat​