Related Questions

A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec2)
Which of the following statements is true?
1. The value of 'g' on Mount Everest is > g
2. The value of 'g' on Mount Everest is 3. After 15 seconds a ball is thrown vertically and returns to the ground. Its velocity is 75 m/s.
4. A ball is returned to the ground after 15 seconds when thrown vertically. Its velocity is 150 m/s.
If a ball is thrown upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 seconds? (g = 10 m/s2)
A ball is thrown vertically upwards at a velocity of 20 m/s. What will be the perimeter of displacement after 3 seconds? (g = 10 m/s2)
A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)
A ball is thrown vertically upwards with a velocity of 20m/s. At what height, will its kinetic energy be half its original value?
A brass ball is tied to a thin wire and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true?
1. The ball moves with constant velocity.
2. The ball moves with constant speed.
3. The ball moves with constant acceleration.
4. The magnitude of the acceleration of the ball is constant.
Select the correct answer:
A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of
A ball of mass 1kg is thrown vertically upwards from a building with a speed of 10m/s, and another ball of mass 3kg is dropped from the same point towards the ground with the same speed. At what time will the centre of mass have the maximum height w.r.t the ground? Assume balls are left at t=0.
The escape velocity of a body projected vertically upwards from the surface of the earth is 11km/sec. If the body is projected at an angle of 45° with the vertically, the escape velocity will be ___________