Verified Solution • 2025–26 Session moderate

QJEEM20Phce76: JEE Main 2020 Physics - Class 11 JEEM20Phce76 Solution: A Tennis ball is released from a height h and after freely…

A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h2. The velocity versus height of the ball during its motion may be represented graphically by :
(graph are drawn schematically and on not to scale)

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/a6fbbc89bcad2897d19629bb7a21d2588a04b25a385ab0e44edef6276d452ffb.webp
  • B https://ik.imagekit.io/novatra/photos/c1c11bb06fbbf59789d604388817e4d657edcdba4d3ecec56f70ce233d93f2f9.webp
  • C https://ik.imagekit.io/novatra/photos/2380f139e7d7dfcc38d2f2567d9ca3d1427471e212b4094010d53a2f0b8a110d.webp
  • D https://ik.imagekit.io/novatra/photos/0d778953a866ad471fb5b82fb0b7c8bba3b3ee548a123f940cf6086aed788c31.webp

Step-by-Step Verified Solution

V, h curve will be parabolic.

Downward velocity is negative and upward is positive

When ball is coming down graph will be in IV quadrant and when going up graph will be in I quadrant.

At H = h, v = 0

at h = 0, v = 2gh

also a = –g, throughout this motion.

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