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QNEET-2020-Ph-726: NEET 2020 Physics - Class 11 NEET-2020-Ph-726 Solution: A ball is thrown vertically downward with a velocity of 20 m/s…
A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is: (g = 10 ) 340 m 320 m 300 m 360 m
Multiple Choice Options
- A 340 m
- B 320 m
- C 300 m
- D 360 m
Step-by-Step Verified Solution
From the Kinematic equation
v 2 = u 2 + 2gh
v = 80 m/s
u = 20 m/s
h = v 2 _ u 2 2 g
= 6400 _ 400 20
= 300 m