Question Answers
Sahay Sir > Question Answers
A man can swim in still water with a speed of 2 m/s. If he wants to cross a river of water current speed root 3 m/s along the shortest possible path, then in which direction should he swim?
22
Sep
A man can swim in still water with a speed of 2 m/s. If he wants to cross a river of water current speed root 3 m/s along the shortest possible path, then in which direction should he swim? A man can swim in still water with a speed of 2 m/s. If he wants [...]
A ball impinges dirctly on another ball at rest. The first ball is brought to rest by the impact. If half of the kinetic energy is lost by the impact, the value of coefficient of restitution is
22
Sep
A ball impinges dirctly on another ball at rest. The first ball is brought to rest by the impact. If half of the kinetic energy is lost by the impact, the value of coefficient of restitution is A ball impinges dirctly on another ball at rest. The first ball is brought to rest by the [...]
A train of 150 m length is going toward north direction at a speed of 10 m/s. A parrot flies at a speed of 5 m/s toward south direction parallel to the railway track. The time taken by the parrot
22
Sep
A train of 150 m length is going toward north direction at a speed of 10 m/s. A parrot flies at a speed of 5 m/s toward south direction parallel to the railway track. The time taken by the parrot A train of 150 m length is going toward north direction at a speed of [...]
A cart is pulled with a constant force F with a constant velocity v on a smooth horizontal ground. A Hooper loads the cart with sands at a time of mu kg/s. Find the
22
Sep
A cart is pulled with a constant force F with a constant velocity v on a smooth horizontal ground. A Hooper loads the cart with sands at a time of mu kg/s. Find the A cart is pulled with a constant force F with a constant velocity v on a smooth horizontal ground. A Hooper [...]
A rocket has initial velocity v0 and mass m0 . if it taravels in free space , find the velocity of the rocket as the function of its existing mass M. Assume that the rocket expels the fuel with a velocity urel with respect to itself.
22
Sep
A rocket has initial velocity v0 and mass m0 . if it taravels in free space , find the velocity of the rocket as the function of its existing mass M. Assume that the rocket expels the fuel with a velocity urel with respect to itself. A rocket has initial velocity v0 and mass m0 [...]
A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest possible time to cross the river is
22
Sep
A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest possible time to cross the river is A swimmer wishes to cross a 500 m river flowing at 5 km/h. His speed with respect to water is 3 km/h. The shortest [...]
A car is moving towards east with a speed of 25 km/h. To the driver of the car, a bus appears to move towards north with a speed of 25root3 km/h. What is the actual velocity of the bus?
22
Sep
A car is moving towards east with a speed of 25 km/h. To the driver of the car, a bus appears to move towards north with a speed of 25root3 km/h. What is the actual velocity of the bus? a bus appears to move towards north with a speed of 25root3 km/h. What is the [...]
A smooth container filled with water moves with a velocity v0. If water leaks at the base with a constant rate mu lg/s, find the ve;locity and acceleration of the container as the function of time.
22
Sep
A smooth container filled with water moves with a velocity v0. If water leaks at the base with a constant rate mu lg/s, find the ve;locity and acceleration of the container as the function of time. A smooth container filled with water moves with a velocity v0. If water leaks at the base with a [...]
A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity -3i – 4j with respect to ground. The relative velocity of the boat with respect to water
22
Sep
A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity -3i – 4j with respect to ground. The relative velocity of the boat with respect to water Rain is falling vertically with a velocity of 25 m/s. A woman rides a [...]
A river is flowing from west to east at a speed of 5 m/min. A man on the south bank of the river, capable of swimming at 10 m/min in still water, wants to swim across the river in the shortest time.
22
Sep
A river is flowing from west to east at a speed of 5 m/min. A man on the south bank of the river, capable of swimming at 10 m/min in still water, wants to swim across the river in the shortest time. A river is flowing from west to east at a speed of 5 [...]