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Physics 9 Chapter 3 - Dynamics - 4
1.
What is the property of body called due to which it resists any change in its state of rest or motion?
a) Momentum
b) Velocity
c) Inertia
d) Force
2.
If we place a cardboard with a coin on the glass and flick the card horizontally with a jerk of our finger. Does the coin move with the cardboard?
a) Yes
b) Always moves
c) No
d) None of these
3.
If we place a cardboard with a coin on the glass and flick the card horizontally with a jerk of our finger. The coin doesn’t move with the cardboard. Why?
a) Due to motion
b) Due to mass
c) Due to inertia
d) Due to momentum
4.
If we place a cardboard with a coin on the glass and flick the card horizontally with a jerk of our finger. Where does the coin go as the cardboard flies away?
a) Falls beside the glass
b) Moves with the cardboard
c) Remain in air
d) Into the glass
5.
Place a strip of paper with the stack of coins on it on the table and pull out the strip with a jerk. What happened to coins?
a) Remains stacked
b) The coins scattered
c) Fall down
d) Fly away
6.
Place a strip of paper with the stack of coins on it on the table and pull out the strip with a jerk. Why do the coins remain stacked?
a) Due to mass
b) Due to momentum
c) Due to motion
d) Due to inertia
7.
The impact of a loaded truck on a body coming its way is ...............even if the truck is moving slowly?
a) Negligible
b) Very large
c) Almost none
d) Very small
8.
What is momentum?
a) A physical quantity
b) A biological quantity
c) None of these
d) A chemical quantity
9.
What is the quantity of motion of a body called that it possesses due to its mass and velocity?
a) Momentum
b) Speed
c) Force
d) Inertia
10.
Due to which, a bullet has very small inertia?
a) Small mass
b) Short length
c) Large mass
d) Greater length
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