141882 A ball is thrown upwards. Its height varies with time as follows:

If the acceleration due to gravity is \(7.5 \mathrm{~m} / \mathrm{s}^{2}\), then the height \(h\) is :

141883 A body is thrown vertically upwards with a velocity of \(19.6 \mathrm{~ms}^{-1}\). The position of the body after \(4 \mathrm{~s}\) will be

141885 A ball is dropped from a bridge \(122.5 \mathrm{~m}\) high. After the first ball has fallen for 2 second, a second ball is thrown straight down after it, what must be the initial velocity of the second ball be, so that both the balls hit the surface of water at the same time?

141880 Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.

141882 A ball is thrown upwards. Its height varies with time as follows:

If the acceleration due to gravity is \(7.5 \mathrm{~m} / \mathrm{s}^{2}\), then the height \(h\) is :

141883 A body is thrown vertically upwards with a velocity of \(19.6 \mathrm{~ms}^{-1}\). The position of the body after \(4 \mathrm{~s}\) will be

141885 A ball is dropped from a bridge \(122.5 \mathrm{~m}\) high. After the first ball has fallen for 2 second, a second ball is thrown straight down after it, what must be the initial velocity of the second ball be, so that both the balls hit the surface of water at the same time?

141880 Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.

141882 A ball is thrown upwards. Its height varies with time as follows:

If the acceleration due to gravity is \(7.5 \mathrm{~m} / \mathrm{s}^{2}\), then the height \(h\) is :

141883 A body is thrown vertically upwards with a velocity of \(19.6 \mathrm{~ms}^{-1}\). The position of the body after \(4 \mathrm{~s}\) will be

141885 A ball is dropped from a bridge \(122.5 \mathrm{~m}\) high. After the first ball has fallen for 2 second, a second ball is thrown straight down after it, what must be the initial velocity of the second ball be, so that both the balls hit the surface of water at the same time?

141880 Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.

141882 A ball is thrown upwards. Its height varies with time as follows:

If the acceleration due to gravity is \(7.5 \mathrm{~m} / \mathrm{s}^{2}\), then the height \(h\) is :

141883 A body is thrown vertically upwards with a velocity of \(19.6 \mathrm{~ms}^{-1}\). The position of the body after \(4 \mathrm{~s}\) will be

141885 A ball is dropped from a bridge \(122.5 \mathrm{~m}\) high. After the first ball has fallen for 2 second, a second ball is thrown straight down after it, what must be the initial velocity of the second ball be, so that both the balls hit the surface of water at the same time?

141880 Assertion: In a free fall, weight of a body becomes effectively zero.
Reason: Acceleration due to gravity acting on a body having free fall is zero.