1
AIPMT 2010 Prelims
+4
-1
A ball moving with velocity 2 m/s collides head on with another stationary ball of double the mass. If the coefficient of restitution is 0.5, then their velocities (in m/s) after collision will be
A
0, 1
B
1, 1
C
1, 0.5
D
0, 2
2
AIPMT 2010 Prelims
+4
-1
An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?
A
400 W
B
200 W
C
100 W
D
800 W
3
AIPMT 2009
+4
-1
A body of mass 1 kg is thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? (g = 10 m/s2)
A
30 J
B
40 J
C
10 J
D
20 J
4
AIPMT 2009
+4
-1
A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be
A
2Mg/k
B
4Mg/k
C
Mg/2k
D
Mg/k
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