Question

एक लम्बित फेंकी गयी गेंd 10 सेकंड bad

earth पर लौट आती है, फेकेजाने की
velocity बताये (g = 10 m/s2)​

Answer 1

Answer:

50 m/s

Explanation:

Time of flight = 10

Time of ascending 10/5 = 5

So we can say that velocity will be zero after 5 s

Therefore

$v = u + at \\ (v = 0 \: at \: highest \: pt) \\ 0 = u + ( - g)t \\ u = 10 \times 5 \\ u = 50 \frac{m}{s}$