Volume 1
The acceleration-time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at time t=0 is 2m/s. The velocity after 2 seconds will be
18
Oct
The acceleration-time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at time t=0 is 2m/s. The velocity after 2 seconds will be The acceleration-time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at [...]
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. His velocity in still water should be
18
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. His velocity in still water should be A man is crossing a river flowing with velocity of 5m/s. He reaches a point directly across at a distance of 60m in [...]
A ball is thrown vertically down with velocity of 5m/s. With what velocity should another ball be thrown down after 2 seconds so that it can hit the 1st ball in next 2 second.
18
Oct
A ball is thrown vertically down with velocity of 5m/s. With what velocity should another ball be thrown down after 2 seconds so that it can hit the 1st ball in next 2 second. A ball is thrown vertically down with velocity of 5m/s. With what velocity should another ball be thrown down after 2 [...]
For four particle A,B,C,D, are in motion. the velocities of one with respect to other are given as V→DC is 20ms towards north, V→BC is 20ms towards east and V→BA is 20ms towards south. Then V→DA is
18
Oct
For four particle A,B,C,D, are in motion. the velocities of one with respect to other are given as V→DC is 20ms towards north, V→BC is 20ms towards east and V→BA is 20ms towards south. Then V→DA is are in motion. the velocities of one with respect to other are given as V→DC is 20ms towards [...]
Two identical trains take 3 sec to pass one another when going in the opposite direction but only 2.5 sec if the speed of one is increased by 50%. The time one would take to pass the other when going in the same direction at their original speed is
18
Oct
Two identical trains take 3 sec to pass one another when going in the opposite direction but only 2.5 sec if the speed of one is increased by 50%. The time one would take to pass the other when going in the same direction at their original speed is A particle starts from rest with [...]
To cross the river in shortest distance, a swimmer should swimming an angle `theta with the upsteram. What is the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest distance. [Assume that the speed of swimmer in still water is greater than the speed of river flow]
18
Oct
To cross the river in shortest distance, a swimmer should swimming an angle `theta with the upsteram. What is the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest distance. [Assume that the speed of swimmer in still water is greater than the speed of [...]
Two trains A and B ,100km apart are travelling towards each other on different tracks with same starting speed of 50km/h. The train A accelerates at 20 km/h^2 and the train B retards at the rate 20 km/h^2. The distance covered by the train A when they cross each other is
18
Oct
Two trains A and B ,100km apart are travelling towards each other on different tracks with same starting speed of 50km/h. The train A accelerates at 20 km/h^2 and the train B retards at the rate 20 km/h^2. The distance covered by the train A when they cross each other is A particle has a [...]
Shown in the figure are the velocity time graphs of the two particle P1 and P2 moving in same straight line in same direction. Which of the following statements about their relative motion is true?
18
Oct
Shown in the figure are the velocity time graphs of the two particle P1 and P2 moving in same straight line in same direction. Which of the following statements about their relative motion is true? Shown in the figure are the velocity time graphs of the two particle P1 and P2 moving in same straight [...]
A particle is thrown upwards from ground. It experiences a constant air resistance which can produce a retardation of 2 ms^−2 opposite to the direction of velocity of particle. The ratio of time of ascent to time of descent is (g= 10 m/s^2 )
18
Oct
A particle is thrown upwards from ground. It experiences a constant air resistance which can produce a retardation of 2 ms^−2 opposite to the direction of velocity of particle. The ratio of time of ascent to time of descent is (g= 10 m/s^2 ) A particle has a velocity u towards east at t=0. Its [...]
A balloon is moving upwards with velocity 10m/s. It releases a stone which comes down to the ground in 11s. The height of the balloon from the ground at the moment when the stone was dropped is (g=10m/s^2)
18
Oct
A balloon is moving upwards with velocity 10m/s. It releases a stone which comes down to the ground in 11s. The height of the balloon from the ground at the moment when the stone was dropped is (g=10m/s^2) A particle has a velocity u towards east at t=0. Its acceleration is towards west and is [...]