Question

A ball is dropped from a balloon going up at a speed of 7m/s. If the balloon was at a height of 60m at the time of dropping the ball, how long will the ball take in reaching the ground?

Please answer this fast. No spams please.

Answer 1

✨Heya!!!!!✨
here is ur answer mate.......❤❤❤

Initial velocity (u)=0m/s
Final velocity (v)=7m/a
Distance or height(s)=60m
Time(t)=?
Acceleration (a)=?

To find acceleration:-

=>v^2=u^2+2as
=>7^2=0^2+2×a×60
=>49=0+120a
=>120a=49
=>a=49/120
=>a=0.40m/s^2

To find time:-

v=u+at
7=0+0.40×t
0.40t=7
t=7/0.49
t=17.5 seconds

ANSWER =17.5 SECONDS

HOPE IT HELPS U.....☺☺☺
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Answer 2

Answer:

the answer of the question is 17.5s.

Explanation:

so we have;

Initial velocity (u)= 0m/s

final velocity (v). = 7m/s

Distance (s). = 60m

Acceleration (a) = ?

Time(t). = ?

so first we have to find acceleration;

v^2 = u^2 + 2as

7^2 =0°2 + 2 × a × 60

49 = 0 + 120a

49 = 120a

120a = 49

a = 49/120

a = 0.40m/s

Then we have to find time;

v = u + at

7 = 0 + 0.40 × t

7 = 0.40t

0.40t = 7

t = 7/0.40

t = 17.5s

I hope it help you. I think you understand.

If not tell me ok.