1a. An unidentified flying object (UFO) is observed to travel atotal distance of 46000 m, starting and ending at rest, over aduration of 1.57 s. Assuming the UFO accelerated at a constant rateto the midpoint of its journey and then decelerated at a constantrate the rest of the way, what was the magnitude of itsacceleration? Express your answer in g s , where 1 g = 9.81m/s^2.
b. A Ford passes a Toyota on the road (both vehicles aretraveling in the same direction). The Ford moves at a constantspeed of 45.3 m/s. Just as the Ford passes it, the Toyota istraveling at 16.0 m/s. As soon as the Ford passes the Toyota, theToyota begins to accelerate forward at a constant rate. Meanwhilethe Ford just keeps going at a steady [] m/s to the east. TheToyota catches up to the Ford a distance of 89.0 m ahead of wherethe Ford first passed it. What was the magnitude of the Toyota sacceleration?
c. Driving down the road at a speed of 33.7 m/s, you suddenlynotice a fallen tree blocking the road a distance of 85.1 m aheadof you. You step on the brake pedal and decelerate at a constantrate. What must the magnitude of your acceleration be so that youwill come to a stop 5.4 m in front of the tree?
