Question

A ball thrown vertically upward return to the thrower in 20 seconds .Calculate the velocity with which it was thrown and the maximum height attained by the ball take (g= 10 metre per second)​

Answer 1

u = ?

v = 0

v = u - at

0 = u - 10 * 10

u = 100m/s

v² = u² - 2as

0 = 10000 - 2 *10* s

20s = 10000

s = 500m

Answer 2

Answer:

u there u are not answering