Velocity and Acceleration Problems II

# Velocity and Acceleration Problems II - Conceptual Physics...

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Conceptual Physics Acceleration and Velocity II Velocity (How fast) Distance (How far) Acceleration Free Fall V=gt D= ½gt² linear V=at D= ½at² 1. Suppose a car moving in a straight line steadily increases its speed each second, first from 35 to 40 km/h, then from 40 to 45 km/h, then from 45 to 50 km/h. What is its acceleration? 2. In 5 seconds a car moving in a straight line increases its speed from 50 km/h to 65 km/h, while a truck goes from rest to 15 km/h in a straight line. Which undergoes greater acceleration? 3. Joel driving a jumbo jet taxiing down the runway, receives word that it must return to the gate to pick up an important passenger who was late to his connecting flight. The jet is traveling at 45 m/s when the pilot receives the message. What is the acceleration of the plane if it takes the pilot 5 s to bring the plane to a halt? 4. Alana is walking to the hairdresser’s at 1.3 m/s when she glances at her watch and realizes that she is going to be late for her appointment. Alana gradually quickens her pace

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