Patra drops her toy from the balcony. The toy hits the ground in 2.5 seconds. What is the velocity of the toy the instant before it hits the ground? (Please help me, I have to turn this in today)

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Which statement can best be concluded from the ideal gas law?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump