The Cart start at position x=0 mm at time t=0s , if the length of the index card is 5cm, and the distance between the photogates is 290 mm, Time 1.075 State 1=1 Time 1.185 State 1=0 Time ?? State 2=1 Time ?? State 2=0 What is the speed of the cart What is the position of Gate 1 Write the expression for position vs Time for the cart At what time dose the cart leave gate 2?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.