Question

The relation between the time of flight of projectile Tf and the time to reach the maximum height Tm is

(a) Tf = 2Tm
(b) Tf = Tm
(c) Tf =2mT
(d) Tf = 2(T)m

I need this answer with explanation ​

Answer 1

Answer:

Explanation:

Time to reach maximum height = t

Time to reach back to ground = t

Total time of flight, T  

f

​  

=t  

m

​  

+t  

m

​  

= 2t  

m

Answer 2

Answer:

Explanation:

Let initial velocity of a projectile is u

and angle with horizontal be @

Then the velocity component along y axis will be usin@

At the highest point the y component velocity will be zero

Taking the equation

V=u+at

V=0

U=usin@

a=-g (as it opposes the motion )

By solving we get

Tm=usin@/g

For time of flight

V=-usin@

U=usin@

a=-g

By solving it we get

Tf=2usin@/g

Therefore Tf =2Tm