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Physics 9 Chapter 3 - Dynamics - 16
1.
What is the formula of initial momentum?
a) P
i
= mv
f
b) P
f
= mv
f
c) P
i
= mv
i
d) P
f
= mv
i
2.
What is the formula of change in momentum?
a) Change in momentum = Initial momentum + Final momentum
b) Change in momentum = Final momentum + Initial momentum
c) Change in momentum = Initial momentum - Final momentum
d) Change in momentum = Final momentum -Initial momentum
3.
How the rate of change of momentum is given by?
a) (P
f
+ P
i
) / t
b) P
f
- P
i
c) P
f
+ P
i
d) (P
f
- P
i
) / t
4.
What is the SI unit of momentum?
a) Second square
b) Newton-second
c) Newton
d) Kilogramme
5.
What is the SI unit of momentum?
a) T
b) N
c) Kg
d) Ns
6.
Which of the following is the unit of momentum?
a) Kgms
-2
b) Nm
c) Ns
-1
d) Ns
7.
Newton-second is the same as.........................?
a) Kgms
2
b) Kgms
1
c) Kgms
-1
d) Kgms
-2
8.
By which of the following materials glass wares are packed?
a) Styrofoam rings
b) Polythene sheets with air sacks
c) All of these
d) Balls
9.
What do the air enclosed in the cavities of materials, with which glass wares are packed, makes them?
a) Flexible
b) Spongy
c) Hard
d) Inflexible
10.
What is the formula of final momentum?
a) P
f
= mv
f
b) P
f
= mv
i
c) P
i
= mv
i
d) P
i
= mv
f
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