A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2
Sahay Sir > Question Answers > A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2
A particle starts from rest. Its acceleration at time t=0 is 5m/s^2 which varies with time as shown in the figure. The maximum speed of the particle will be
27
Oct
A particle starts from rest. Its acceleration at time t=0 is 5m/s^2 which varies with time as shown in the figure. The maximum speed of the particle will be 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 [...]
During a rainy day, rain is falling vertically with a velocity 2m/s A boy at rest starts his motion with a constant acceleration of 2m/s2 along a straight road . Find the rate at which the angle of the axis of umbrella with vertical should be changed so that the rain always falls parallel to the axis of the umbrella.
27
Oct
During a rainy day, rain is falling vertically with a velocity 2m/s A boy at rest starts his motion with a constant acceleration of 2m/s2 along a straight road . Find the rate at which the angle of the axis of umbrella with vertical should be changed so that the rain always falls parallel to [...]
To a man walking at the rate of 3km/h the rain appear to fall vertically downwards. If he doubled his speed the rain appears to fall at an angle of 30^∘ with vertically. Find the speed of rain with respect to ground.
27
Oct
To a man walking at the rate of 3km/h the rain appear to fall vertically downwards. If he doubled his speed the rain appears to fall at an angle of 30^∘ with vertically. Find the speed of rain with respect to ground. A body is projected vertically upwards with a velocity 10m/s . It reaches [...]
A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio of speed of swimmer with respect to water and the speed of river flow.
27
Oct
A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio [...]
A man can swim in still water with a speed of 3m/s x and y axis are drawn along and normal to the bank of river flowing to right with a speed of 1m/s. The man starts swimming from origin O at t = 0 second. Assume size of man to be negligible. Find the equation of locus of all the possible points where man can reach at t = 1 sec
27
Oct
A man can swim in still water with a speed of 3m/s x and y axis are drawn along and normal to the bank of river flowing to right with a speed of 1m/s. The man starts swimming from origin O at t = 0 second. Assume size of man to be negligible. Find the [...]
A swimmer can swim with velocity 5m/s relative to a river so as to reach a point directly opposite to his starting point. The velocity of river is 3 m/s and it is 40 m wide. Find the time in which the swimmer cross the river.
27
Oct
A swimmer can swim with velocity 5m/s relative to a river so as to reach a point directly opposite to his starting point. The velocity of river is 3 m/s and it is 40 m wide. Find the time in which the swimmer cross the river. A body is projected vertically upwards with a velocity [...]
Swimmer is swimming with the velocity 15 m/s relative to river in the direction perpendicular to the river flow. The river is 750 m wide and is flowing with a speed of 4m/s. Find the time taken by the boat to reach the opposite bank.
27
Oct
Swimmer is swimming with the velocity 15 m/s relative to river in the direction perpendicular to the river flow. The river is 750 m wide and is flowing with a speed of 4m/s. Find the time taken by the boat to reach the opposite bank. A body is projected vertically upwards with a velocity 10m/s [...]
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 [...]