Physics

ACCELERATED MOTION 1. Use the velocity-time graph below to calculate the velocity of the object whose motion is plotted on the graph. What is the acceleration between the points on the graph labeled A and B? a. b. What is the acceleration between the points on the graph labeled B and C? c. What is the acceleration between the points on the graph labeled D and E? d. What is the total distance that the object travels between points B and C? 700.0 500.0 U1 0 P c: 400.0 Velocity (mrs) 300.0 200.0 100.0 0-00 10.0 20.0 30.0 40.0 50.0 60.0 70.0 30.0 Time(s} 2. If you throw a ball straight upward, it will rise into the air and then fall back down toward the ground. Imagine that you throw the ball with an initial velocity of13.7 m/s. 3. How long does it take the ball to reach the top of its motion? b. How far will the ball rise before it begins to fall? (1. What is its average velocity during this period? 3. A car is traveling at 20 m/s when the driver sees a ball roll into the street. From the time the driver applies the brakes, it takes 2 s for the car to come to a stop. a. What is the average acceleration of the car during that period? b. How far does the car travel while the brakes are being applied? 4. A hot air balloon is rising at a constant speed of 1.00 01/5. The pilot accidentally drops his pen 10.0 5 into the flight. a. How far above the ground is the pen when it is dropped? b. How fast is the pen traveling when it hits the ground, ignoring air resistance? Chapter 3 ' Accelerated Motion 1