FRICTION
Quiz by Seema Chhallany
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- Q 1/6Score 0
Why is it harder for the boy in Image B to get down the hill?
29Work
Displacement
Motion
Friction
- Q1
Why is it harder for the boy in Image B to get down the hill?
Work
Displacement
Motion
Friction
45s - Q2
Friction is a force that acts in an ___________ direction of movement.
west
similar
opposite
parallel
45s - Q3
What are 2 factors that determine the amount of friction between 2 objects?
Force and roughness between surfaces
Hills and valleys and how smooth or rough the surface is
Amount of force and amount of surface the comes in contact
The force and the weight exerted on the surfaces
45s - Q4
Which of the following is an example of friction that is harmful?
Pencil marking on paper
Engine parts wearing out
Using an eraser to erase marks
Sand placed on ice in the winter
45s - Q5
How can friction be reduced?
all of the above are ways of reducing friction
use wax, grease or oil
reduce the force acting between the 2 surfaces
reduce the roughness of the 2 surfaces coming in contact
45s - Q6
You can walk because there is friction between your __________ and ______________
feet and air
feet and ground
ground and air
air and ground
45s
