5:24 PM Sun Sep 23 75% Course: PHY 101 001 College Physics I Type Last Name: Fir

Question

5:24 PM Sun Sep 23 75% Course: PHY 101 001 College Physics I Type Last Name: First Name: Date: I I PHY-101 HOMEWORK Chapter 2 Part 1 1. Write in equation form the definitions of: (a) average speed (b) average acceleration 2. What are the units of: (a) average speed (b) average acceleration? 3. A bus makes a trip according to the position-time graph shown in the drawing. What is the average velocity (magnitude and direction), in km/h, of the bus during (a) segment A, b) segment B, and (c) segment C? +50.0 400 30.0 200 100 10 2.0 3.0 4.0 5.06.0 Time h

Explanation / Answer

1.

Vavg = total distance / total time = s/t

a avg = Vavg / 2t = s/2t2

2.

a) m/s b) m/s2

3.

A

v = dx/dt = x2-x1 / t2-t1 = 10-40 / 3-0 = -10 m/s = 10km/hr negative x direction

B

similarly v = 5km/hr positive x direction

C

v = 20 km/hr positive direction

upvote if it helps

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