003_capture.docx

Q.1: Define Projectile? Define Projectile motion? Ans: PROJECTILE "Any object that is given any initial velocity and which subsequently follows a path determined by the gravitational force acting on it and by the fictional resistance of the atmosphere is called a Projectile". O r "An object projected into space without the driving power of Its own and moves under the action of gravity is called Projectile". PROJECTILE MOTION: "When a covers a (distance) parabolic type of motion is called

body is thrown with an angle '0' and it path under the action of gravity, this Projectile Motion".

Example:  Kicked or thrown balls.  Jumping annuals. Object thrown from a window.  Object released from an aero plane. Q.2: A particle is projected at an angle to the horizontal with the velocity allowed to fall freely so that It covers a certain distance in a parabolic path. Derive the expression for the following: Horizontal component of velocity 

Ans:

Vertical component of velocity

 Maximum height of the projectile Range of the projectile > The maximum range  Projectile trajectory Suppose a particle is projected at an angle t with the horizontal, as shown in figure. T h e

i n i t i a l , v e l o c i t y V , o f th e p a rt i c l e ca n b e ) " resolved into two rectangular components V., & V 0 ,, along horizontal axis a nd ve rtical a xis respectively. The magnitudes of the horizontal

V

Maximum height ' h . • ime T ,

Rangt:

a

and vertical components of velocity are as follows.

R ■ disunite at timc 2 T