Question

Plzz.....solve it.......✌️​

Answer 1

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Velocity 7.2m/s and time 1 seconds.

If we let the angle of projection to be x so the components will be vx = ucosx and vy=usinx.

Now, from the questions data we have ucosx=vcos45 or v=u√2cosx.

vy=usinx - gt = -vsin45.

usinx - gt=-ucosx.

usinx=gt-ucosx.

Now, from the main equation of

y=u(sinx)t - 1/2gt^2.

We can substitute that :-

gt^2 - utcosx -gt^2/2=1.25.

Again, we have utcosx=3 + 3/4gt^2.

Now, from both the equations after adding them we will get the value of time to be 1seconds.

Again, we have usinx = 5 + 1.25=6.25.

ucosx=3.75.

On solving we get the value of u to be 7.2.

So, the value of velocity is 7.2m/s.

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Answer 2

Answer:

hope it will help u mate

All the best

:)