A boat travels up stream in a river with a constant but unknown speed V with respect to water. At the start of this trip upstream, a bottle is dropped over the side. After 7.5 minutes the boat turns around and heads downstream. It catches up the bottle when the bottle has driffted 1 km down stream from the point at which it was dropped into water. Then the velocity of water current is?
2007-01-17 21:53:28 · 3 answers · asked by Ekant 2 in Science & Mathematics ➔ Physics
The bottle is dropped at a point. It moves along the stream. After 7.5 minutes, it is seen to be displaced through a distance of 1 km.
It has traveled 1 km in 7.5minutes
Velocity is 1/7.5 = 0.133333 km/ minute = 2.22 m/s.
2007-01-17 23:04:22 · answer #1 · answered by Pearlsawme 7 · 0⤊ 1⤋
motion of a particle along a straight line
2007-01-17 23:50:28 · answer #2 · answered by amit m 1 · 0⤊ 1⤋
velocity=s/t
rectilinear means the straightline motion.
it is correct.
2007-01-17 22:35:44 · answer #3 · answered by Naddi S 1 · 0⤊ 1⤋