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Jouer Froggy Jumps
1. What is the force that opposes the motion of an object on a surface?
A
Friction force
B
Magnetic force
C
Gravity force
2. Which type of surface would generally have more friction?
A
Smooth surface
B
Wet surface
C
Rough surface
3. What unit is used to measure friction force?
A
Newton
B
cm
C
Apples
4. Which surface would have less friction when an object slides on it?
A
Sandpaper surface
B
Ice surface
C
Rubber surface
5. What is the direction of friction force acting on an object?
A
Same as the direction of motion
B
Opposite to the direction of motion
C
Perpendicular to the surface