141803 A ball is thrown horizontally at a speed of \(20 \mathrm{~m}\) \(\mathrm{s}^{-1}\), from a height of \(20 \mathrm{~m}\) above the ground. The magnitude of its velocity as it strikes the ground is
(Acceleration due to gravity \(=10 \mathbf{~ m ~ s}^{-\mathbf{2}}\) )

141804 A boy drops a ball from the top of a building consisting of several floors. Each floor has the same height. The ball covers one floor from the top in one second. The number of floors, the ball will cover in three seconds is

141805 Two balls \(A\) and \(B\) are placed at the top of 180 \(m\) tall tower. Ball \(A\) is released from the top at \(t\) \(=0 \mathrm{~s}\). Ball \(B\) is thrown vertically down with an initial velocity ' \(u\) 'at \(t=2 \mathrm{~s}\). After a certain time, both balls meet \(100 \mathrm{~m}\) above the ground. Find the value of ' \(u\) ' in \(\mathrm{ms}^{-1}\) [use \(\mathrm{g}=10 \mathrm{~ms}^{-2}\) ]

141806 A ball is dropped from rest at time \(t=0\) from certain height \(A\). Second ball is dropped from same height at time \(t=1 \mathrm{~s}\). At what time \(t\), the distance between two balls becomes \(10 \mathrm{~m}\) ?

141803 A ball is thrown horizontally at a speed of \(20 \mathrm{~m}\) \(\mathrm{s}^{-1}\), from a height of \(20 \mathrm{~m}\) above the ground. The magnitude of its velocity as it strikes the ground is
(Acceleration due to gravity \(=10 \mathbf{~ m ~ s}^{-\mathbf{2}}\) )

141804 A boy drops a ball from the top of a building consisting of several floors. Each floor has the same height. The ball covers one floor from the top in one second. The number of floors, the ball will cover in three seconds is

141805 Two balls \(A\) and \(B\) are placed at the top of 180 \(m\) tall tower. Ball \(A\) is released from the top at \(t\) \(=0 \mathrm{~s}\). Ball \(B\) is thrown vertically down with an initial velocity ' \(u\) 'at \(t=2 \mathrm{~s}\). After a certain time, both balls meet \(100 \mathrm{~m}\) above the ground. Find the value of ' \(u\) ' in \(\mathrm{ms}^{-1}\) [use \(\mathrm{g}=10 \mathrm{~ms}^{-2}\) ]

141806 A ball is dropped from rest at time \(t=0\) from certain height \(A\). Second ball is dropped from same height at time \(t=1 \mathrm{~s}\). At what time \(t\), the distance between two balls becomes \(10 \mathrm{~m}\) ?

141803 A ball is thrown horizontally at a speed of \(20 \mathrm{~m}\) \(\mathrm{s}^{-1}\), from a height of \(20 \mathrm{~m}\) above the ground. The magnitude of its velocity as it strikes the ground is
(Acceleration due to gravity \(=10 \mathbf{~ m ~ s}^{-\mathbf{2}}\) )

141804 A boy drops a ball from the top of a building consisting of several floors. Each floor has the same height. The ball covers one floor from the top in one second. The number of floors, the ball will cover in three seconds is

141805 Two balls \(A\) and \(B\) are placed at the top of 180 \(m\) tall tower. Ball \(A\) is released from the top at \(t\) \(=0 \mathrm{~s}\). Ball \(B\) is thrown vertically down with an initial velocity ' \(u\) 'at \(t=2 \mathrm{~s}\). After a certain time, both balls meet \(100 \mathrm{~m}\) above the ground. Find the value of ' \(u\) ' in \(\mathrm{ms}^{-1}\) [use \(\mathrm{g}=10 \mathrm{~ms}^{-2}\) ]

141806 A ball is dropped from rest at time \(t=0\) from certain height \(A\). Second ball is dropped from same height at time \(t=1 \mathrm{~s}\). At what time \(t\), the distance between two balls becomes \(10 \mathrm{~m}\) ?

141803 A ball is thrown horizontally at a speed of \(20 \mathrm{~m}\) \(\mathrm{s}^{-1}\), from a height of \(20 \mathrm{~m}\) above the ground. The magnitude of its velocity as it strikes the ground is
(Acceleration due to gravity \(=10 \mathbf{~ m ~ s}^{-\mathbf{2}}\) )

141804 A boy drops a ball from the top of a building consisting of several floors. Each floor has the same height. The ball covers one floor from the top in one second. The number of floors, the ball will cover in three seconds is

141805 Two balls \(A\) and \(B\) are placed at the top of 180 \(m\) tall tower. Ball \(A\) is released from the top at \(t\) \(=0 \mathrm{~s}\). Ball \(B\) is thrown vertically down with an initial velocity ' \(u\) 'at \(t=2 \mathrm{~s}\). After a certain time, both balls meet \(100 \mathrm{~m}\) above the ground. Find the value of ' \(u\) ' in \(\mathrm{ms}^{-1}\) [use \(\mathrm{g}=10 \mathrm{~ms}^{-2}\) ]

141806 A ball is dropped from rest at time \(t=0\) from certain height \(A\). Second ball is dropped from same height at time \(t=1 \mathrm{~s}\). At what time \(t\), the distance between two balls becomes \(10 \mathrm{~m}\) ?