Chapter 2: Q1PE (page 82)
Find the following for path A in Figure 2.59:
(a) The distance travelled.
(b) The magnitude of the displacement from start to finish.
(c) The displacement from start to finish.
Short Answer
- 6 m
- 6
- +6 m
Chapter 2: Q1PE (page 82)
Find the following for path A in Figure 2.59:
(a) The distance travelled.
(b) The magnitude of the displacement from start to finish.
(c) The displacement from start to finish.
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Get started for freeFind the following for path D in Figure 2.59:
(a) The distance travelled.
(b) The magnitude of the displacement from start to finish.
(c) The displacement from start to finish.
A weather forecast states that the temperature is predicted to be −5ºC the following day. Is this temperature a vector or a scalar quantity? Explain.
Consider the velocity vs. time graph of a person in an elevator shown in Figure 2.58. Suppose the elevator is initially at rest. It then accelerates for, maintains that velocity for, then decelerates foruntil it stops. The acceleration for the entire trip is not constant so we cannot use the equations of motion from Motion Equations for Constant Acceleration in One Dimension for the complete trip. (We could, however, use them in the three individual sections where acceleration is a constant.) Sketch graphs of
(a) position vs. time and
(b) acceleration vs. time for this trip.
A helicopter blade spins at exactly revolutions per minute. Its tip isfrom the centre of rotation.
(a) Calculate the average speed of the blade tip in the helicopter’s frame of reference.
(b) What is its average velocity over one revolution?
You throw a ball straight up with an initial velocity of 15.0 m/s. It passes a tree branch on the way up at a height of 7.00 mhow much additional time will pass before the ball passes the tree branch on the way back down?
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