Question

The speed with which a ball should be thrown down so that it bounces 5m higher than it's original level assuming no energy loss in striking the ground is ....plzzz answer I will mark brainliest for correct answer with explanation

Answer 1

Answer:

mgh=1/2mv²

nand m is canceled

gh=1/2v²

v =  \sqrt{9.8 \times 15 \times 2}  

now the ans is

v = 7    \sqrt{ \frac{15}{10} }

Step-by-step explanation:

use this method , you will get the answer ..

don't copy this

this is a answer but not off your ques ..

this is a example