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PhysicsNEET 2021Projectile motion

Motion in a Plane

A car starts from rest and accelerates at 5 m/s25\ \mathrm{m/s^2}. At t=4t = 4 s, a ball is dropped out of a window by a person sitting in the car. What are the velocity and acceleration of the ball at t=6t = 6 s? (Take g=10 m/s2g = 10\ \mathrm{m/s^2})

  1. A.20 m/s, 5 m/s25\ \mathrm{m/s^2}
  2. B.20 m/s, 0
  3. C.20220\sqrt2 m/s, 0
  4. D.20220\sqrt2 m/s, 10 m/s210\ \mathrm{m/s^2}✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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