Question

a body is thrown horizontally from thè top of toner if reached thè ground after 4sec At an angle of 45degree to thè ground thè velocity of projection is​

Answer 1

h=8g

Vy=0+g×4=4g

usin45=Vy=4g

Vx=ucos45=4g

Its horizontal speed will remain constant

=4g

=39.2ms

Answer 2

h=8g

Vy=0+g×4=4g

usin45=Vy=4g

Vx=ucos45=4g

Its horizontal speed will remain constant

=4g

=39.2ms