1.An object is released, 50m above the ground, from a hot air balloon, which is descending vertically at a
speed of 4.0m/s^2.
Calculate:
a. The velocity of the object at the ground
b. The duration of descent of the object
c. The height of the balloon above the ground when
the object hits the ground.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?