Question

A projectile is fired at 30° to the horizontal. The vertical
component of its velocity is 80 ms^-1. Its time of flight is
T. What will be the velocity of the projectile at t = 1/2
(a) 80 ms^-1
(b) 80√3 ms^-1
(c) (80/√3 ) ms-1
(d) 40 ms^-1​

Answer 1

Answer:

B-80 under root3

Explanation:

Usin30=80

u=160m/s

Time of flight =2usin30/g

=2x160x1/10x2

=16 second

at t/2

Vertical component will be zero

and horizontal component will be 160cos30

=80under root 3

Hope it helped!