141689 Two cars going round curve with speeds one at \(90 \mathrm{~km} / \mathrm{h}\) and other at \(15 \mathrm{~km} / \mathrm{h}\). Each car experiences same acceleration. The radii of curves are in the ratio of :

141690 A boat is sent across a river with a velocity of 8 \(\mathrm{kmh}^{-1}\). If the resultant velocity of boat is \(10 \mathrm{~km}\) \(h^{-1}\), then velocity of river is

141691 A train of \(150 \mathrm{~m}\) length is going towards North direction at a speed of \(10 \mathrm{~m} / \mathrm{s}\). A parrot flies at the speed of \(5 \mathrm{~m} / \mathrm{s}\) towards South direction parallel to the railways track. The time taken by the parrot to cross the train is

141692 In any system, large number of particles are moving randomly with a constant speed of \(v\) in all possible directions. Then the magnitude of the relative velocity between a of particles averaged over all the pairs in the collection will be

141689 Two cars going round curve with speeds one at \(90 \mathrm{~km} / \mathrm{h}\) and other at \(15 \mathrm{~km} / \mathrm{h}\). Each car experiences same acceleration. The radii of curves are in the ratio of :

141690 A boat is sent across a river with a velocity of 8 \(\mathrm{kmh}^{-1}\). If the resultant velocity of boat is \(10 \mathrm{~km}\) \(h^{-1}\), then velocity of river is

141691 A train of \(150 \mathrm{~m}\) length is going towards North direction at a speed of \(10 \mathrm{~m} / \mathrm{s}\). A parrot flies at the speed of \(5 \mathrm{~m} / \mathrm{s}\) towards South direction parallel to the railways track. The time taken by the parrot to cross the train is

141692 In any system, large number of particles are moving randomly with a constant speed of \(v\) in all possible directions. Then the magnitude of the relative velocity between a of particles averaged over all the pairs in the collection will be

141689 Two cars going round curve with speeds one at \(90 \mathrm{~km} / \mathrm{h}\) and other at \(15 \mathrm{~km} / \mathrm{h}\). Each car experiences same acceleration. The radii of curves are in the ratio of :

141690 A boat is sent across a river with a velocity of 8 \(\mathrm{kmh}^{-1}\). If the resultant velocity of boat is \(10 \mathrm{~km}\) \(h^{-1}\), then velocity of river is

141691 A train of \(150 \mathrm{~m}\) length is going towards North direction at a speed of \(10 \mathrm{~m} / \mathrm{s}\). A parrot flies at the speed of \(5 \mathrm{~m} / \mathrm{s}\) towards South direction parallel to the railways track. The time taken by the parrot to cross the train is

141692 In any system, large number of particles are moving randomly with a constant speed of \(v\) in all possible directions. Then the magnitude of the relative velocity between a of particles averaged over all the pairs in the collection will be

141689 Two cars going round curve with speeds one at \(90 \mathrm{~km} / \mathrm{h}\) and other at \(15 \mathrm{~km} / \mathrm{h}\). Each car experiences same acceleration. The radii of curves are in the ratio of :

141690 A boat is sent across a river with a velocity of 8 \(\mathrm{kmh}^{-1}\). If the resultant velocity of boat is \(10 \mathrm{~km}\) \(h^{-1}\), then velocity of river is

141691 A train of \(150 \mathrm{~m}\) length is going towards North direction at a speed of \(10 \mathrm{~m} / \mathrm{s}\). A parrot flies at the speed of \(5 \mathrm{~m} / \mathrm{s}\) towards South direction parallel to the railways track. The time taken by the parrot to cross the train is

141692 In any system, large number of particles are moving randomly with a constant speed of \(v\) in all possible directions. Then the magnitude of the relative velocity between a of particles averaged over all the pairs in the collection will be