On one boundary of a swimming pool , there is a person at point `A` whose speed of running on group (boundary) is `10ms^(-1)` , while that of swimming is `6ms^(-1)` . He has to reach a point `B` in the swimming pool . The distance covered on the boundary so that the time required to reach the point `B` in the pool is minimum, is

A ball is thrown up with a speed of 9.8 ms^-1 What the time taken by the ball to reach the highest point.

Two swimmers A and B start swimming from different positions on the same bank as shown in figure.The swimmer A swims at angle 90^(@) with respect to the river to reach point P .He takes 120 seconds to cross the river of width 10m .The swimmer B also takes the same time to reach the point P

Two boatman must swim across the river from point A to point B . One of them sends a boat on the line AB and on reaching the opposite shore, he is at the point C(figure). In order to reach point B, it moves upstream from point C to point B. The second boatman guides the boat so that it directly goes B. Which of them will get to point B faster, and how many times ? speed of boats on the water in both cases is the same and equal to V=5 m/s, the rate of flow of water is 3m/sec. the width of river is 100 m.

Two swimmers P and Q start swimming from different positions on the same bank as shown in the figure. The swimmer P swims at an angle 90^(@) with respect to the river to reach point A. He takes 120 second to cross the river of width 10m. The swimmer Q also takes the same time to reach the point A. the velocity component of Q along x-axis with respect to ground is K/24. Find the value of K.

Ram swims in an 80 m long pool. He covers 160 m in one minute by swimming from one end to the other and back. 6 along the same straight path. Find his average speed

A man swims from a point A on the bank of a river if width 100 m . When he swims perpendicular to the water current, he reaches the other bank 50 m downstream. The angle to the bank at which he should swim, to reach the directly opposite point B on the other bank is. .

A river is flowing from west to east with a speed 5 m s^(-1) . A swimmer can swim in still water at a speed of 10 m s^(-1) . If he wants to start from point A on south bank and reach opposite point B on north bank. In what direction direction should he swim ?