Question

calculate 10m of velocity in 10a​

Answer 1

Answer:

Explanation:

Correct option is

C

12 s

Let t second be the time of flight of the first body after meeting, then (t−4) second will be the time of flight of the second body.

Since, h  

1

​

=h  

2

​

 

∴98t−  

2

1

​

gt  

2

=98(t−4)g(t−4)  

2

 

On solving, t=12s.

Answer 2

Answer:

Answer

Distance travelled, s = 10 m

Final velocity, v = 0 m/s

g = -9.8 m/s

2

1) Using,

v

2

−u

2

=2gs

u

2

=196

u=14m/s, where u is the velocity with which the object is thrown upwards.

2) Using,

v=u+gt

t=

g

v−u

=1.43 sec