Question

A basketball referee tosses the ball straight up for the starting tip-off. At what
velocity must a basketball player leave the ground to rise 2.05 m above the floor
in an attempt to get the ball? *
O
-40.18
+40.18
-6.34 m/s
+6.34 m/s
+4.48 m/s
-4.48 m/s

Answer 1

Answer:

6.34 m/s

Explanation:

Given that,

A basketball player leave the ground to rise 2.05 m above the floor  in an attempt to get the ball.

We need to find the velocity must a basketball player leave the ground. Using equation of kinematics as follows :

$v^2-u^2=2ah$

As it leaves the ground, its final velocity, v = 0

a = -g (opposite to gravity)

$-u^2=-2gs\\\\u^2=2\times 9.8\times 2.05\\\\u=6.338\ m/s$

or

u = +6.34 m/s

So, the basketball player must leave the ground with a velocity of 6.34 m/s.