A flowerpot falls from a windowsill 25.0 m above the sidewalk with an acceleration of 9.81 m/s2. A. What is the pot’s velocity just before it hits the ground?
B. How much time does a person on the sidewalk have to get out of the way?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?