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A rocket is launched vertically from the surface of earth with an initial velocity v. How far above the surface of earth it will go? Neglect the air resistance.
27
Aug
A rocket is launched vertically from the surface of earth with an initial velocity v. How far above the surface of earth it will go? Neglect the air resistance. A rocket is launched vertically from the surface of earth with an initial velocity v. How far above the surface of earth it will go? Neglect [...]
The position versus time graph for a certain particle moving along the x-axis is shown in the figure. Find the average velocity in the time intervals (a) 0 to 2 s, (b) 2 s to 4 s, and (c) 4 s to 7 s.
27
Aug
The position versus time graph for a certain particle moving along the x-axis is shown in the figure. Find the average velocity in the time intervals (a) 0 to 2 s, (b) 2 s to 4 s, and (c) 4 s to 7 s. (b) 2 s to 4 s and (c) 4 s to [...]
Let us consider a boat which moves with a velocity v bw = 5 km/h relative to water. At time t=0, the boat passes through a piece of code floating in water while moving downstream. If it turns back at time t=t 1 when and where does the boat meet the cork again? Assume t 1 , = 30 min.
27
Aug
Let us consider a boat which moves with a velocity v bw = 5 km/h relative to water. At time t=0, the boat passes through a piece of code floating in water while moving downstream. If it turns back at time t=t 1 when and where does the boat meet the cork again? [...]
For a particle projected in a transverse direction from a height h above earth’s surface, find the minimum initial velocity so that it just grazes the surface of earth such that path of this particle would be an ellipse with centre of earth as the farther focus, point of projection as the apogee and a diametrically opposite point on earth’s surface as perigee.
27
Aug
For a particle projected in a transverse direction from a height h above earth’s surface, find the minimum initial velocity so that it just grazes the surface of earth such that path of this particle would be an ellipse with centre of earth as the farther focus, point of projection as the apogee and a [...]
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find the minimum initial velocity so that it just grazes the surface of earth such that path of this particle would be an ellipse with centre of earth as the farther focus ,
For a particle projected in a transverse direction from a height h above earth's surface ,
point of projection as the apogee and a diametrically opposite point on earth's surface as perigee. ,
On the pole of the Earth a body is imparted velocity v 0 directed vertically up. Knowing the radius of the Earth and the free-fall acceleration on its surface, the height to which the body will ascend is given as h= xgR−v 0 2 Rv 0 2 . The air drag is to be neglected. Find x.
27
Aug
On the pole of the Earth a body is imparted velocity v 0 directed vertically up. Knowing the radius of the Earth and the free-fall acceleration on its surface, the height to which the body will ascend is given as h= xgR−v 0 2 Rv 0 2 . The air drag [...]
A swimmer capable of swimming with velocity v relative to water jumps in a flowing friver having velocity u. The man swims a distance d down stream and returns back to the priginal position. Find out the time taken in complete motion.
27
Aug
A swimmer capable of swimming with velocity v relative to water jumps in a flowing friver having velocity u. The man swims a distance d down stream and returns back to the priginal position. Find out the time taken in complete motion. car 2 starts accelerating with a 2 . If v 1 [...]
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car 2 starts accelerating with a 2 . If v 1 >v 2 . Find the minimum initial separation between the cars to avoid collision between them. ,
on a straight road in same direction. When the cars are separated by a distance d ,
the driver of car 1 applies brakes and the car moves with uniform retardation a 1 . Simultaneously ,
Two cars 1 and 2 move with velocities v 1 and v 2 respectively ,
A spaceship approaches the Moon (mass =M and radius =R) along a parabolic path which is almost tangential to its surface. At the moment of the maximum approach, the brake rocket is fired to convert the spaceship into a satellite of the Moon. The change in speed is
27
Aug
A spaceship approaches the Moon (mass =M and radius =R) along a parabolic path which is almost tangential to its surface. At the moment of the maximum approach, the brake rocket is fired to convert the spaceship into a satellite of the Moon. The change in speed is A spaceship approaches the Moon (mass =M [...]
Two cars 1 and 2 move with velocities v 1 and v 2 respectively, on a straight road in same direction. When the cars are separated by a distance d, the driver of car 1 applies brakes and the car moves with uniform retardation a 1 . Simultaneously, car 2 starts accelerating with a 2 . If v 1 >v 2 . Find the minimum initial separation between the cars to avoid collision between them.
27
Aug
Two cars 1 and 2 move with velocities v 1 and v 2 respectively, on a straight road in same direction. When the cars are separated by a distance d, the driver of car 1 applies brakes and the car moves with uniform retardation a 1 . Simultaneously, car 2 starts accelerating [...]
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car 2 starts accelerating with a 2 . If v 1 >v 2 . Find the minimum initial separation between the cars to avoid collision between them. ,
on a straight road in same direction. When the cars are separated by a distance d ,
the driver of car 1 applies brakes and the car moves with uniform retardation a 1 . Simultaneously ,
Two cars 1 and 2 move with velocities v 1 and v 2 respectively ,
A cosmic body A moves to the Sun with velocity v 0 (when far from the Sun) and aiming parameter l the arm of the vector v 0 relative to the centre of the Sun (figure shown above). Find the minimum distance by which this body will get to the Sun.
27
Aug
A cosmic body A moves to the Sun with velocity v 0 (when far from the Sun) and aiming parameter l the arm of the vector v 0 relative to the centre of the Sun (figure shown above). Find the minimum distance by which this body will get to the Sun. A [...]
An elevator is moving with an upward acceleration a. A coin is dropped from rest from the roof of the elevator. After what time the coin will strike the base of the elevator?
27
Aug
An elevator is moving with an upward acceleration a. A coin is dropped from rest from the roof of the elevator. After what time the coin will strike the base of the elevator? An elevator is moving with an upward acceleration a. A coin is dropped from rest from the roof of the elevator. After [...]