Q. A ball is thrown horizontally from a point 100 m above the ground with a speed of 20 m/s. Which
statements is incorrect regarding the ball just before reaching the ground?
- Horizontal distance covered by the ball is 90.35 m.
- Time taken by the ball is 4.5 s.
- Speed of the ball is 49 m /s
- Displacement of the ball 110m.
option d is incorrect as displacement will be 100 m . as displacement is the distance displace by the object when force is applied . when it is droped from 100m above ground i.e point A, and settles at the bottom , the ground i.e point B so displacement will be 100m so option D is answer