1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A wooden black of mass '$$\mathrm{m}$$' moves with velocity '$$\mathrm{V}$$' and collides with another block of mass '$$4 \mathrm{~m}$$', which is at rest. After collision the block of mass '$$\mathrm{m}$$' comes to rest. The coefficient of restitution will be

A
0.7
B
0.25
C
0.4
D
0.5
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Force is applied to a body of mass $$2 \mathrm{~kg}$$ at rest on a frictionless horizontal surface as shown in the force against time $$(F-t)$$ graph. The speed of the body after 1 second is

MHT CET 2021 22th September Evening Shift Physics - Center of Mass and Collision Question 3 English

A
7.5 m/s
B
12.5 m/s
C
10 m/s
D
15 m/s
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A molecule of mass 'm' moving with velocity 'v' makes 5 elastic collisions with a wall of container per second. The change in momentum of the wall per second in 5 collisions will be

A
10 mv
B
5 mv
C
$$\frac{1}{5}$$ mv
D
$$\frac{1}{10}$$ mv
4
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A particle of mass '$$m$$' collides with another stationary particle of mass '$$M$$'. A particle of mass '$$\mathrm{m}$$' stops just after collision. The coefficient of restitution is

A
$$\frac{M}{m}$$
B
$$\frac{m+M}{M}$$
C
$$\frac{M-m}{M+m}$$
D
$$\frac{\mathrm{m}}{\mathrm{M}}$$
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