The projectile motion

 . Positive direction towards right.

.Positive y-axis upward as the object moves downward.

.Value of y will always be negative-

.Acceleration in y direction is - g

.In free fall acceleration in x direction is zero

. Vertical motion along y direction does not effect the horizontal x motion

.vy=-gt

.Horizontal velocity component remains constant 

.Vertical comppnent increase linearly with time

.Vo instant velocity

.Vx = vox= vocos

Vy= vo sin- gt

1/2g vopower^2 sino^2 = maximum height

R=vo/g sin20

Vertical component= of acceleration= is equal to the acceleration due to gravity

g=-g




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