Two trains A and B are moving on parallel tracks with same speed and in the same direction. An observer P is sitting in train A and another person Q is sitting in train B. Is Q at rest with respect to P?

Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h^-1 in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m s^-2 . If after 50 s, the guard of B just brushes past the driver of A, what was the original distance between them ?

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :-Places A and B are 80 km apart from each other on a highway. A car starts from A and another from B at the same time. If they move in the same direction they meet in 8 hours , and if they move in opposite direction, they meet in 1 hour and 20 minutes respectively. Find the speed of the cars.

A person sitting in a moving train throws a ball vertically upwards. How does the ball appear to move to an observer inside the train

Two long parallel wires carrying current 2.5 amperes and I ampere in the same Idirection ( directed into the plane of the paper) are held at P and Q respectively such that they are perpendicular to the plane of paper. The points P and Q are located at a distance of 5 metres and 2 metres respectively from a collinear point R ( see figure) An electron moving with a velocity of 4xx10^(5) m//s along the positive x- direction experiences a force of magnitude 3.2xx10^(-20) N at the point R. Find the value of I.

A person sitting in a moving train throws a ball vertically upwards. How does the ball appear to move to an observer outside the train?

Points A and B are 90 km apart from each other on a highway. A car starts from A and another from B at the same time. If they go in the same direction they meet in 9 hours and if they go in opposite direction they meet in 9/7 hours. Find their speeds.

An express train is moving with a velocity v_1 . Its driver finds another train is movig on the same track in the same direction with velocity v_2 . To escape collision, driver applies a retardation a on the train. The minimum time of escaping collision be

Two trains leave a railway station at the same time. The first train travels due west and the second due north. The first train travels 5 km/hr faster than the second train. If after two hours, they are 50 km apart, find the average speed of each train.