141679 A ball \(A\) is thrown up vertically with a speed \(u\) and at the same instant another \(B\) is released from a height \(h\). At time \(t\), the speed of A relative to \(B\) is

141680 Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed \(u\) along the track so that the relative velocities of the trains with respect to the wind are in the ratio \(1: 2\), then the speed of each train must be

141681 A \(500 \mathrm{~kg}\) boat is \(9 \mathrm{~m}\) long and is floating without motion on still water. A man of mass \(100 \mathrm{~kg}\) is at one end and if he runs to the other end of the boat and stops, the displacement of the boat is

141682 A scooter going to the east at \(10 \mathrm{~m} / \mathrm{s}\) turns right through an angle of \(90^{\circ}\). If the speed of the scooter remains unchanged in taking this turn, the change in the velocity of the scooter is

141679 A ball \(A\) is thrown up vertically with a speed \(u\) and at the same instant another \(B\) is released from a height \(h\). At time \(t\), the speed of A relative to \(B\) is

141680 Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed \(u\) along the track so that the relative velocities of the trains with respect to the wind are in the ratio \(1: 2\), then the speed of each train must be

141681 A \(500 \mathrm{~kg}\) boat is \(9 \mathrm{~m}\) long and is floating without motion on still water. A man of mass \(100 \mathrm{~kg}\) is at one end and if he runs to the other end of the boat and stops, the displacement of the boat is

141682 A scooter going to the east at \(10 \mathrm{~m} / \mathrm{s}\) turns right through an angle of \(90^{\circ}\). If the speed of the scooter remains unchanged in taking this turn, the change in the velocity of the scooter is

141679 A ball \(A\) is thrown up vertically with a speed \(u\) and at the same instant another \(B\) is released from a height \(h\). At time \(t\), the speed of A relative to \(B\) is

141680 Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed \(u\) along the track so that the relative velocities of the trains with respect to the wind are in the ratio \(1: 2\), then the speed of each train must be

141681 A \(500 \mathrm{~kg}\) boat is \(9 \mathrm{~m}\) long and is floating without motion on still water. A man of mass \(100 \mathrm{~kg}\) is at one end and if he runs to the other end of the boat and stops, the displacement of the boat is

141682 A scooter going to the east at \(10 \mathrm{~m} / \mathrm{s}\) turns right through an angle of \(90^{\circ}\). If the speed of the scooter remains unchanged in taking this turn, the change in the velocity of the scooter is

141679 A ball \(A\) is thrown up vertically with a speed \(u\) and at the same instant another \(B\) is released from a height \(h\). At time \(t\), the speed of A relative to \(B\) is

141680 Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed \(u\) along the track so that the relative velocities of the trains with respect to the wind are in the ratio \(1: 2\), then the speed of each train must be

141681 A \(500 \mathrm{~kg}\) boat is \(9 \mathrm{~m}\) long and is floating without motion on still water. A man of mass \(100 \mathrm{~kg}\) is at one end and if he runs to the other end of the boat and stops, the displacement of the boat is

141682 A scooter going to the east at \(10 \mathrm{~m} / \mathrm{s}\) turns right through an angle of \(90^{\circ}\). If the speed of the scooter remains unchanged in taking this turn, the change in the velocity of the scooter is