"A lift is ascending with decreasing speed". What are the directions of velocity and acceleration of the lift at the given instant.
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A, B, D
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Assertion : A lift is ascending with decreasing speed means acceleration of lift is downwards. Reason : A body always moves in the direction of its acceleration.
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Knowledge Check
Assertion : A lift is ascending with decreasing speed means acceleration of lift is downwards. Reason : A body always moves in the direction of its acceleration.
A
If both Assertion and Reason are correct and Reason is the correct explanation of assertion.
B
If both Assertion and Reason are correct but Reason in not the correct explanation of Assertion.
C
If Assertion is true but Reason is false.
D
If Assertion is false but Reason is true.
A lift is ascending with a constant speed ''V''. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A
Zero
B
g
C
`ltg`
D
`gtg`
A lift is asecending with a constnat speed ''V''. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be .
