Motion And Forces Assessment Review Question Preview (ID: 18805)
Motion And Forces.
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Which material should be used to build a racetrack that will allow toy cars to travel fast
a) Carpet, because friction will be high
b) Gravel, because friction will be high
c) Plastic, because friction will be low
d) sandpaper because friction will be low
What will happen if a magnet is placed next to a pile of steel paper clips
a) the magnet will provide a balanced force, causing the paper clips to spin in circles
b) the magnet will provide an unbalanced force, keeping the paper clips stationery
c) the magnet will provide an unbalanced force, pushing the paper clips away from it
d) the magnet will provide an unbalanced force, pulling the paper clips toward it
As a roller coaster car travels down a hill, which type of change in energy allows it to speed up
a) potential energy changing into heat energy
b) potential energy changing into kinetic energy
c) kinetic energy changing into heat energy
d) kinetic energy changing into potential energy
Which form of energy does a car's engine convert into mechanical energy?
a) light
b) wind
c) chemical
d) gravitational
Which type of energy is changed by plants into chemical energy?
a) solar
b) nuclear
c) thermal
d) gravitational
Two skaters apply a different amount of force while skating together. Which term describes the result of the combined force?
a) balanced
b) net
c) steady
d) unbalanced
Which direction will an object move when two different forces are applied to it?
a) in the direction of the lesser force
b) in the direction of the greater force
c) West
d) East
What happens when an object slows down?
a) it travels less distance
b) it speeds up
c) it moves with a constant speed
d) it changes directions
Which statement is true about the work done in lifting a box?
a) energy is transferred to the box from the lifter
b) energy is transferred to the lifter from the box
c) the energy of the box remains constant
d) the energy of the lifter remains constant
What type of energy does an object have when it is not in motion?
a) kinetic energy
b) potential energy
c) mechanical energy
d) solar energy
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