A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energywhen it is dropped from the balloon are respectively(acceleration due to gravity = 9·8 m/s-2)

\(\sqrt {980} \;m.{s^{ - 1}}\;and\;\sqrt {980} \;J\)

A rigid body of mass 2 kg is dropped from a stationary balloon kept at

1.	A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energywhen it is dropped from the balloon are respectively(acceleration due to gravity = 9·8 m/s-2)
A.	980 m.s-1 and 980 J
B.	\(\sqrt {980} \;m.{s^{ - 1}}\;and\;\sqrt {980} \;J\)
C.	980 m.s-1 and √980 J
D.	√980 m.s-1 and 980 J
Answer» E.

Discussion

No Comment Found

Related MCQs

A proton is moving at a speed of 3.8 × 106 m/s in the positive x-direction. A magnetic field of 0.25 × 10-4 T is in the positive z-direction. The magnitude of the force acting on the proton is:
Galileo’s law of __________ was Newton's starting point which he formulated as the 'First Law of motion'.
Gymnasts apply some coarse substance on their hands to
A block of mass 10 kg is kept on a rough inclined plane as shown in the figure. A force of 3 N is applied on the block. The coefficient of static friction between the plane and the block is 0.6. What should be the minimum value of force P, such that the block does not move downward? (Take g = 10 ms-2)
A horizontal force F produces an acceleration of \(6m/s^2\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 m/s^2\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be
In order to slide a huge box lying on the ground in her room, Reshma should apply a force which is greater than which of the following forces ?
A body is acted upon by two unequal forces in opposite directions, but not in one line. The effect is that the body will have
A body falls freely from rest from the top of a tall cliff. The distance it travelled in the first second is (g = 10 m/sec2)
A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h. the force required to stop the vehicle in 10 s,
Dirt can be removed from a carpet by shaking it vigorously for some time in a process that is based on

A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energywhen it is dropped from the balloon are respectively(acceleration due to gravity = 9·8 m/s-2)

Discussion

No Comment Found

Related MCQs

Reply to Comment