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Answers
A
B
C
D
E
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Difficulty—
If a ball is thrown from the ground with velocity \(u \, m/s\) upwards in a gravitation field with \(g \,m/s^2\) acceleration working downwards. The ball is rebounded and for each rebound, the velocity reduces to f times of previous velocity (\(0<f<1\)). What is the total distance travelled by the ball since the time it is thrown upwards for the first time?
A. \(\dfrac{u^2}{g\left(1-f^2\right)}\)
B. \(\dfrac{u^2}{g\left(1-f\right)}\)
C. \(\dfrac{u}{g\left(1-f^2\right)}\)
D. \(\dfrac{u^2}{gf^2}\)
E. \(\dfrac{u}{gf^2}\)
The OA is A
A. \(\dfrac{u^2}{g\left(1-f^2\right)}\)
B. \(\dfrac{u^2}{g\left(1-f\right)}\)
C. \(\dfrac{u}{g\left(1-f^2\right)}\)
D. \(\dfrac{u^2}{gf^2}\)
E. \(\dfrac{u}{gf^2}\)
The OA is A
