Part 1
A man is crossing a river flowing with velocity of 5m/s. He reaches a point directly across at a distance of 60m in 5 sec. Find his velocity in still water.
27
Oct
A man is crossing a river flowing with velocity of 5m/s. He reaches a point directly across at a distance of 60m in 5 sec. Find his velocity in still water. A man is crossing a river flowing with velocity of 5m/s. He reaches a point directly across at a distance of 60m in 5 [...]
The height y and the distance x along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by y=(8t−5t^2)m and x=6t m, where t is in seconds. The velocity with which the projectile is projected is. (acceleration due to gravity = 9.8 m/s^2)
27
Oct
The height y and the distance x along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by y=(8t−5t^2)m and x=6t m, where t is in seconds. The velocity with which the projectile is projected is. (acceleration due to gravity = 9.8 m/s^2) The height y and the [...]
From the top of a tower of height 10m, one fire is shot horizontally with a speed of 5 root3 m/s. Another fire is shot upwards at angle of 60^o with the horizontal at some interval of time with the same speed of 5 root3 m/s. The shots collide in air at a certain point. The time interval between the two fires is
27
Oct
From the top of a tower of height 10m, one fire is shot horizontally with a speed of 5 root3 m/s. Another fire is shot upwards at angle of 60^o with the horizontal at some interval of time with the same speed of 5 root3 m/s. The shots collide in air at a certain point. [...]
A ball is projected up at an angle theta with horizontal from the top of a tower with a speed v. its hits ground at point A after time tA with speed vA. Now this ball is projected at a same angle and speed from the base of the tower (located at point p) and its hits ground at point B after time tB with speed vB. then
27
Oct
A ball is projected up at an angle theta with horizontal from the top of a tower with a speed v. its hits ground at point A after time tA with speed vA. Now this ball is projected at a same angle and speed from the base of the tower (located at point p) and [...]
A ball is dropped from the top of a building 100m high simultaneously another ball is thrown upward from the bottom of the building with such a velocity that the ball collide exactly mid way. What is the speed in m/s with which the second ball is thrown (g = 10m/s^2)
27
Oct
A ball is dropped from the top of a building 100m high simultaneously another ball is thrown upward from the bottom of the building with such a velocity that the ball collide exactly mid way. What is the speed in m/s with which the second ball is thrown (g = 10m/s^2) A body is projected [...]
A bus is moving with a constant velocity 10m/s on a straight road. a scooterist wishes to overtake the bus in 1 m . if the bus is at distance of 1.2 km ahead ,then the velocity with which he has to chase the bus is
27
Oct
A bus is moving with a constant velocity 10m/s on a straight road. a scooterist wishes to overtake the bus in 1 m . if the bus is at distance of 1.2 km ahead ,then the velocity with which he has to chase the bus is A bus is moving with a constant velocity 10m/s [...]
A train of length L move with a constant speed Vt . A person at the back of the train fires a bullet at time t=0 towards a target which is at a distance of D(at time t=0) from the front of the train(on the same direction of motion). Another person at the front of the train fires another bullet at time t=T towards the same target. Both bullets reach the target at the same time. Assuming the speed of the bullets Vb are same, the length of the train is?
27
Oct
A train of length L move with a constant speed Vt . A person at the back of the train fires a bullet at time t=0 towards a target which is at a distance of D(at time t=0) from the front of the train(on the same direction of motion). Another person at the front of [...]
A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2 , the height covered is
27
Oct
A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2 , the height covered is A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2 the height covered is [...]
At what height h above the earth’s surface, the value of g becomes g/2 (where R is the radius of earth)
22
Sep
At what height h above the earth’s surface, the value of g becomes g/2 (where R is the radius of earth) At what height h above the earth's surface the value of g becomes g/2 (where R is the radius of earth) September 22, 2020 Category: Chapter 10 - Gravitation , MTG NEET Physics , [...]
Two solid spherical planets of equal radii R having masses 4M and 9M their centre are separated by a distance 6R. A projectile of mass m is sent from the planet of mass 4 M towards the heavier planet. What is the distance r of the point from the lighter planet where the gravitational force on the projectille is zero ?
22
Sep
Two solid spherical planets of equal radii R having masses 4M and 9M their centre are separated by a distance 6R. A projectile of mass m is sent from the planet of mass 4 M towards the heavier planet. What is the distance r of the point from the lighter planet where the gravitational force [...]