Learning Outcomes Most are able to explain and justify the theory of projectile motion to a number of sports. Some are able to predict the factors that affect projectile motion.

Homework Flipped learning activity on Angular motion. Complete exam questions on projectile motion Ensure you meet with the relevant person to discuss coursework

Flight of a projectile STARTER 1 : Group work on exam feedback STARTER 2: Using the whiteboards explain the flight of Shot Table tennis ball Justify the shape of the curve. Extension : predict factors that affect the distance the projectile covers.

Projectile Motion This refers to the motion of either an object or the human body being ‘projected’ into the air at an angle. The flight path is called a trajectory. Examples in sport: a ball as a projectile long jump (human body as a projectile) gymnastic vault (human body as a projectile)

Factors affecting the shape of the curve Red = vertical component Blue = horizontal component Gravity and Air resistance affect the vertical component

Parabolic Flight Curve

Parabolic Flight Curve Effects of air resistance minimal on horizontal component Weight predominant force on vertical component Applies to most sport projectiles Symmetrical flight path

Distorted Parabolic Flight Curve

Distorted Parabolic Flight Curve Air resistance causes projectile to veer away (little weight) Asymmetrical Badminton/Golf Ball Badminton Struck hard – AR very large, resultant force close to air resistance, first part of flight slow Later in flight – AR much less Air resistance Weight Resultant force Air resistance Resultant force Weight

Mini plenary Write either a sentence, four words or draw a diagram and label (AR and Weight) to illustrate your understanding of the differences in the shape of the flight curve of a SHOT PUT and a TABLE TENNIS

Trajectory Shot Put (parabolic) Table Tennis Ball (distorted parabolic)

Factors affecting distance Activity: Predict factors that affect the distance covered by the projectile by using the equipment provided. Factors to consider: Angle of release Height of release Velocity of release Landing height

Factors affecting distance Height of release Increase leads to an increase in the horizontal displacement (distance) of the projectile. e.g. Taller shot putters have an advantage over shorter ones Velocity of release e.g. the shift in shot putt is to ensure that the shot leaves the performers hand at maximum velocity

Factors affecting distance Angle of release for any given velocity and height of release, there is an optimal release angle which maximises the horizontal Displacement. When both the release height and the landing height are equal then the optimum angle of release is 45o.

Factors affecting distance Landing height If the release height is greater than the landing height, the optimum angle of release needs to be less than 45o. E.g. shot putt. If the release height is below the landing height then the optimum angle of release needs to be greater than 45o. E.g. Shooting in basketball (assuming the ring is the landing height).

Plenary Complete projectile motion worksheet to demonstrate understanding. Extension: Create own exam question and marking scheme on projectile motion.

Learning Outcomes Most are able to explain and justify the theory of projectile motion to a number of sports. Some are able to predict the factors that affect projectile motion.