10. lunar projectile motion a rock thrown vertically upward
from the surface of the moon at a velocity of 24 m/sec (about
86 km/h) reaches a height of
s = 24t – 0.8t- m in t sec.
a. find the rock's velocity and acceleration at time t. (the
acceleration in this case is the acceleration of gravity on the
moon.)
b. how long does it take the rock to reach its highest point?
c. how high does the rock go?
d. how long does it take the rock to reach half its maximum height?
e. how long is the rock aloft?