Physics, asked by beastslayer07, 6 months ago

Time (min)
Distance (km)
0
20
0
20
40
60
80
100
120
65
95
125
155
(a) Find the values of , and 02.
(b) When did the bus change its speed?
(c) What is the distance covered in the first hour?
(d) What is the distance covered in the second
hour?
(e) What is the average speed for the complete
journey?

Answers

Answered by arundsouza

Explanation:

Given :

Distance - Time graph:

Time (min) 0 20 40 60 80 100 120

Distance(Km) 0 20 40 65 95 125 155

1. Find the values of v1 and v2:

V1=Distance/Time=20/20=1km/min

V2=1.25km/hr

2.When did the bus change it's speed?

Bus changed its speed when t=60min

3.What is the distance covered in the 1st hour?

Distance covered in first hour is 65km

4.What is the distance covered in the 2nd hour?

Distance covered in second hour is 155-65km=90km

5.What is the average speed for the complete journey?

Average speed=total distance/total time

total distance=155km

time=120min =2hours

Average speed=155/2=77.5km/h

Answered by babyksingh

Answer:See answers in part 9 of image.

Explanation:

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