1. is this graph exponential growth or exponential decay? explain why.2. on what swing did the pendulum's maximum height dip below 1 in. for the first time?

1. This graph shows exponential decay, meaning there is a strong decrease at first (of pendulum height in this case), that later slows down. The  rate of decay becomes slower as times passes. As the pendulum continues swinging the maximun height reached decreases. For example, in the first swing the maximun height reached is of 3.6 inches compared to the second swing in which the maximun height is of 2,16 inches, showing a significant decrease.

2. The pendulum dipped below one inch for the first time in the fourth swing.

it means that the hockey puck was traveling very fast.