Direction of frictional force between wheel of the car and road is ---------------a.Upward b.Forward c.Backward d.Downward
FORWARD
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10
What are the types of kinetic friction? a) Sliding friction, rolling friction and adhesive friction b) Sliding friction and rolling friction c) Rolling friction and adhesive friction d) Sliding friction and adhesive friction
b) Sliding friction and rolling friction
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10
. Static coefficient of friction is greater than the kinetic coefficient of friction. a) True b) False
TRUE
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20
NO QUESTION
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thief
Give points!
5
10
15
20
25
seesaw
Swap points!
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rocket
Go to first place!
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thief
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5
10
15
20
25
10
If the normal force is doubled, then coefficient of friction is
HALVED
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10
Which of the following is the dimension of coefficient of friction? a. [M0 L0 T0] b. [M L2T] c. [M2 L T] d. [M L2 T-2]
[M0 L0 T0]
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trap
No points!
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shark
Other team loses 25 points!
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shark
Other team loses 15 points!
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banana
Go to last place!
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seesaw
Swap points!
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seesaw
Swap points!
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gift
Win 20 points!
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lifesaver
Give 10 points!
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10
____ is known as the motion that would take place under the applied force if friction were absent. a) Impending motion b) Constrained motion c) Unconstrained motion d) Linear motion
