linear motion and Magnus lift

what is linear motion

• the moment of a body in a straight or curved line

• its the same distance, direction and time

what is distance

total length of path covered

what is displacement

• start and finish point 

• if the pool is 50 m and you are doing 100m then the displacement would be 0 as the start and finish are the same point 

what is speed 

• the rate in change of distance 

• speed = distance / time  m/s

what is velocity

• the rate of change in displacement

• velocity = distance / time taken

what is acceleration

• the rate of cane in velocity 

• acceleration = (final velocity - initial velocity) / time taken 

what is Magnus lift 

the flight path of a ball to generate a spin 

how to generate top and bottom spin

• to generate top spin hit above centre of mass to generate bottom spin hit below centre of mass

what is the boundary layer

• when a ball spins, the air molecules surrounding the ball spin with it which is the boundary layer

• hits a treasure diff causing it to lift