269957 A particle is projected from ground at an angle \(45^{\circ}\) with initial velocity \(20 \sqrt{2} \mathrm{~m} \mathrm{~s}^{-1}\). The magnitude of average velocity in a time interval from \(\mathrm{t}=0\) to \(\mathrm{t}=\mathbf{3} \mathrm{s}\) in \(\mathrm{m} \mathrm{s}^{-1}\) is
269960 A player kicks a foot ball obliquely at a speed of \(20 \mathrm{~m} / \mathrm{s}\) so that its range is maximum. Another player at a distance of \(24 \mathrm{~m}\) away in the direction of kick starts running at that instant to catch the ball. Before the ball hits the ground to catch it, the speed with which the second player has to run is ( \(g=10 \mathrm{~ms}^{-2}\) )
269957 A particle is projected from ground at an angle \(45^{\circ}\) with initial velocity \(20 \sqrt{2} \mathrm{~m} \mathrm{~s}^{-1}\). The magnitude of average velocity in a time interval from \(\mathrm{t}=0\) to \(\mathrm{t}=\mathbf{3} \mathrm{s}\) in \(\mathrm{m} \mathrm{s}^{-1}\) is
269960 A player kicks a foot ball obliquely at a speed of \(20 \mathrm{~m} / \mathrm{s}\) so that its range is maximum. Another player at a distance of \(24 \mathrm{~m}\) away in the direction of kick starts running at that instant to catch the ball. Before the ball hits the ground to catch it, the speed with which the second player has to run is ( \(g=10 \mathrm{~ms}^{-2}\) )
269957 A particle is projected from ground at an angle \(45^{\circ}\) with initial velocity \(20 \sqrt{2} \mathrm{~m} \mathrm{~s}^{-1}\). The magnitude of average velocity in a time interval from \(\mathrm{t}=0\) to \(\mathrm{t}=\mathbf{3} \mathrm{s}\) in \(\mathrm{m} \mathrm{s}^{-1}\) is
269960 A player kicks a foot ball obliquely at a speed of \(20 \mathrm{~m} / \mathrm{s}\) so that its range is maximum. Another player at a distance of \(24 \mathrm{~m}\) away in the direction of kick starts running at that instant to catch the ball. Before the ball hits the ground to catch it, the speed with which the second player has to run is ( \(g=10 \mathrm{~ms}^{-2}\) )
269957 A particle is projected from ground at an angle \(45^{\circ}\) with initial velocity \(20 \sqrt{2} \mathrm{~m} \mathrm{~s}^{-1}\). The magnitude of average velocity in a time interval from \(\mathrm{t}=0\) to \(\mathrm{t}=\mathbf{3} \mathrm{s}\) in \(\mathrm{m} \mathrm{s}^{-1}\) is
269960 A player kicks a foot ball obliquely at a speed of \(20 \mathrm{~m} / \mathrm{s}\) so that its range is maximum. Another player at a distance of \(24 \mathrm{~m}\) away in the direction of kick starts running at that instant to catch the ball. Before the ball hits the ground to catch it, the speed with which the second player has to run is ( \(g=10 \mathrm{~ms}^{-2}\) )