Kinematics Problems.notebook
September 23, 2014
A wagon is initially rolling UP a hill at a velocity of 4.6 m/s. The wagon is accelerated down the hill at 0.64 m/s2 until its final velocity is 2.3 m/s DOWN the hill. Calculate the displacement from the initial position. An oil tanker, initially traveling west at 18 km/h is accelerated uniformly until it is traveling east at 21.6 km/h. The acceleration is 0.20 m/s2 towards the east. Compute the total displacement from the tanker’s initial position. A corvette can accelerate during high speeds at about 2.0 m/s2. At this rate how long does it take the car to accelerate from 80 km/h to 160 km/h? A snowmobile with an initial speed of 5.6 m/s travels 24.0 m in 2.0 s. What final speed does it attain? Express your answer first in m/s and then in km/hr. A hockey puck initially travelling to the right at 34 m/s is slowed down by rough ice at a rate of 2.0 m/s/s. It moves for 7.2 s before finally coming to rest. How far did it travel? Superman is flying at an initial velocity of 33.5 m/s [N] when he decides to slow to 10.0 m/s [N] in a time of 8.05 s. He then continues at this velocity for 12.4 s before accelerating at 2.35 m/s2 [N] until he reaches a final velocity of 23.8 m/s [N]. a) Calculate Superman’s displacement in this time. (Hint: This motion has three unique parts) b) Calculate Superman’s average velocity for his entire flight. Sep 18­2:09 PM
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