Areal: thrown vertically upward from the surface of the mean at a velocity of 40 misec reaches a height efs = I'lt 0.312 meters in tsec. a. Find the rock's velocity and acceleration at time t. l:I-. How long does it take the rock to reach its highest point'? c. How high does the rock 90? d. How long does it take the rock to reach half its maximum height? a. How long is the rock aloft? An object is dropped from a tmltrerI 180 ft above the ground. The object's height above ground teen into the fall is 5 = 131.1 -1Etz. e. What is the object's velocity, speed, and acceleration at time t? in. About how long does it take the object to hit the ground? c. What is the object's velocity at. the moment of impact