You see a water balloon fall vertically past your dormitory window. having quick reflexes, you observed that the balloon took 0.15 s to pass from the top to the bottom of your window – a distance of 2 m. assuming the balloon was released from rest, how far
above the bottom of your window was the balloon released? what if it were not released from rest – would the balloon have started higher or lower?

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 100 kg ball traveling at 5 m/s. a 1,000 kg ball traveling at 5 m/s would have kinetic energy. a 10 kg ball traveling at 5 m/s would have kinetic energy. a 100 kg person falling at 5 m/s would have kinetic energy. the choices for all: the same 10 times more 10 times less 100 times more 100 times less