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- 1. Multiple Choice
Why does a ball stops/slows down on its own ?
because of gravity
because of friction
because muscular force
because of magnetic force
- 2. Multiple Choice
Why it is difficult to walk on a wet floor than on a dry floor?
Because of contact force
Because of magnetic force
Because of gravitational force
Because of less friction
- 3. Multiple Choice
What do we apply when there is a lot of friction on machine parts ?
sand
grease
shampoo
powder
- 4. Multiple Choice
Which of the following is an effect of friction?
It slows down a moving object.
It changes the shape of an object.
it makes a moving object move faster.
it causes a moving object to change its direction.
- 5. Multiple Choice
Which of the following activities are difficult to do without frictional force?
Keep an object in position and sharpening a knife.
Skating on ice and eating
Drinking some water and eating
Eating only
- 6. Multiple Choice
Which type of friction is shown in the picture?
rolling
fluid
static
sliding
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