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WorksheetsForces
Total questions: 25
Worksheet time: 25mins
Some students wanted to find out if a tennis ball and a baseball dropped from the same height hit the ground at the same time. This investigation tests the effect of which of the following?
wind
friction
gravity
magnetism
What is Friction ?
The distance an object travels per unit of time
Speed in a given direction
Force that opposes motion
Force that pulls objects towards each other
Friction slows down or stops moving objects.
True
False
What makes car's tire worn out?
Friction between the tire and car engine.
Friction between the tire and the road.
Friction between the tire and air.
Which of these can reduce (decrease) friction?
making the surface more rough
adding oil on the surface
putting rubber on the surface
Rough surface create ....... friction
less
more
same
Smooth surface create ............. friction
less
same
more
A soccer shoe sole is designed with spikes to create
same friction
less fricction
more friction
A ballet shoe sole is designed with much smoother surface to create
more friction
same friction
less friction
Which two of these forces act on parachutes?
Air Resistance
Gravity
Thrust
Kinetic Energy
What causes an object to fall faster?
Smaller surface area
Larger surface area
If it has a parachute
If it is softer
Another name for air resistance is...
Buoyancy
Streamline
Gravity
Drag
The larger the surface area of the moving object, the ___________ air resistance there is.
Less
More
Longer
Quicker
Air resistance pushes against falling
objects and __________________.
Speeds them up
Keeps them afloat
Slows them down
Spins them
The larger the parachute the ____________
Less air resistance
More surface tension
Less drag
More drag
Air resistance is a force caused by...
Water pushing against moving objects
Air pushing against moving objects
Gravity pushing against moving objects
Normal force pushing against moving objects
The more streamlined an object is, the...
More air resistance
Less air resistance
Slower air resistance
Faster air resistance
