Explain how does t1 became d/40.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Explain how does t1 became d/40.

Step 1 About 1st half
Let total distance be, 2d.
For 1st half, distance be 'd'.
Time t1.
Initial velocity = 40 km/h; final velocity = 60 km/h.
Then d = (40 + 60) =1= 40f1 t1
40
Step 2 About second half.
Distance = d
Time = t2
d = 60t2 = t2:
Step 3 Average velocity
2d
Average velocity = Total dis tan ce
= 48 km/h
Total time
Transcribed Image Text:Step 1 About 1st half Let total distance be, 2d. For 1st half, distance be 'd'. Time t1. Initial velocity = 40 km/h; final velocity = 60 km/h. Then d = (40 + 60) =1= 40f1 t1 40 Step 2 About second half. Distance = d Time = t2 d = 60t2 = t2: Step 3 Average velocity 2d Average velocity = Total dis tan ce = 48 km/h Total time
1.4. A vehicle has constant acceleration for the first half of a certain distance and constant
velocity for the second half. Calculate the average velocity if the initial and final velocities are
20 km/ h and 60 km/h.
Transcribed Image Text:1.4. A vehicle has constant acceleration for the first half of a certain distance and constant velocity for the second half. Calculate the average velocity if the initial and final velocities are 20 km/ h and 60 km/h.
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