Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT2021PhysicsMotion in One DimensionActual

A balloon is rising vertically up with a velocity of 29 ~ms ⁻¹ . A stone is dropped from it and it reaches the ground in 10 seconds. The height of the balloon when the stone was dropped from it, was ( g =9.8 ~ms ⁻² )

Options

  1. A100 ~m
  2. B200 ~m
  3. C400 ~m
  4. D150 ~m

Correct answer

B. 200 ~m

Step-by-step solution

For stone to be dropped from rising balloon of velocity 29 ~m / s , u =-29 ~m / s , t =10 sec . array l h =-29 10+ 1 2 9.8 100 =-290+490=200 ~m . array

Practice Motion in One Dimension on Quantrex Academy →

More from Motion in One Dimension

A particle is moving in a straight line. The variation of position ' x ' as a function of time ' t ' is given as x= (t^3-6 t^2+20 t+15 ) m . The velocity of the body when its accel 2024The distance travelled by a particle starting from rest and moving with an acceleration 4 3 ~ms ⁻² , in the third second is: 2024A passenger sitting in a train A moving at 90 ~km /h observes another train B moving in the opposite direction for 8 ~s . If the velocity of the train B is 54 ~km / h , then length 2023An object moves with speed v₁, v₂ and v₃ along a line segment A B, B C and C D respectively as shown in figure. Where A B=B C and A D=3 A B , then average speed of the object will 2023From a 200 ~m high tower, one ball is thrown upwards with speed of 10 ~ms ⁻¹ and another is thrown vertically downwards at the same speeds simultaneously. The time difference of th 2020Consider the acceleration, velocity and displacement of a tennis ball as its falls to the ground and bounces back. Directions of which of these change in the process? 2018A stone is projected with velocity 2 g h , so that it just clears two walls of equal height h , at distance of 2 h from each other. The time interval of passing between the two wal 2018A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height d / 2 . Neglecting subsequent motion and air resistance, its 2018 Full Motion in One Dimension list All BITSAT PYQs