1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is S1 and that covered in the first 20 seconds is S2, then
A
S2 = 3S1
B
S2 = 4S1
C
S2 = S1
D
S2 = 2S1
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is :
A
4 m s$$-$$2 upwards
B
4 m s$$-$$2 downwards
C
14 m s$$-$$2 upwards
D
30 m s$$-$$2 downwards
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A body, under the action of a force $$\overrightarrow F = 6\widehat i - 8\widehat j + 10\widehat k,$$ acquires an accelerations of 1 m/s2. The mass of this body must be
A
10 kg
B
20 kg
C
10$$\sqrt 2 $$ kg
D
2$$\sqrt {10} $$ kg
4
AIPMT 2009
MCQ (Single Correct Answer)
+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
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