kikay5375
Asked:
December 2022
Why does a car travel faster in going down than in going up? * A. it is moving against gravity B. it is being pushed by the wind C. force is needed to stop an object D. it is being pulled by the wight of the car
kikay5375
Asked:
December 2022
Which of the following show that the electrical energy transformed into heat energy? * A. light candle B. glue gun C. flashlight D. telephone
kikay5375
Asked:
December 2022
What are you going to put in a surface to reduce the friction on it? * A. stone B. lubricant C. piece of cloth D. none of the above
kikay5375
Asked:
December 2022
Rougher surfaces have__________. * A. less friction B. the same level of friction C. greater friction D. none of the above
kikay5375
Asked:
December 2022
What makes a rolling ball slow down and stop? * A. air resistance B. brake C. friction D. gravity
kikay5375
Asked:
December 2022
A boy sits on a grassy slope. What force stops him sliding down? * A. Friction B. magnetic C. gravity D. weight
kikay5375
Asked:
December 2022
Why are lubricants used in machines? * A. To increase friction B. to decrease friction C. to operate the machine D. to make the machine move slower