a hot air balloon is traveling vertically upward at a constant speed of 2.8 m/s. when
it is 29 m above the ground, a package is
released from the balloon.
after it is released, for how long is the
package in the air? the acceleration of gravity
is 9.8 m/s^2.
answer in units of s

what is its speed just before impact with the
ground?
answer in units of m/s