Case II Projection in upward direction with some angle with horizonta

Vertical mirror

sign convention

Horizontal Mirror

x = (u cosq) t

Case III Projection in downward direction with some angle with horizontal

Vertical Mirror

Horizontal Mirror

Projectile along inclined plane For Simplicity & understanding

Vertical Mirror

V = u - g t

O = u sin b - (g cosa) t

Horizontal Mirror

OB = OA Cos a

Special case of Projectile Motion

Case I

(i) Time of flight  let OQ ® x -axis

OP ® y –axis

ux = u

uy = 0

ax = - g sin b

ay = - g cos b

Now

Vx = ux + axt

O = u – g sin bt

(ii) Final velocity V

Vy = uy + ay t

V = 0 – g cos b

V = u cot b

(iii) Height h

Now

h = Sy sin a

(iv) Distance AB

Now

Case 2

(i) Time after which V1  ^ V2

Ball 1

Ball 2

Now

g2 t2 = u1 u2

(ii) gap between the ball 1 and ball 2 at the time

Ball 1   x1 = u1 t,

Ball 2

x2 = - u2t

Gap between Ball 1 and Ball 2

Gap  = (u1 + u2) t

Case 3 Collision of two projectile

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