The following table gives the data about motion of a car. Time (h) Distance (km) 1.00 30 1.30 60 2.00 90 2.30 95 3.00 130 Plot the graph. (i) Find the speed of the car between 2.00 hours and 2.30 hours. (ii) What is the average speed of the car? (iii) Is the car’s motion an example of uniform motion? Justify.
Answers
Given : the data about motion of a car.
Time (h) Distance (km) 1.00 30 1.30 60 2.00 90 2.30 95 3.00 130
To Find : Plot the graph.
speed of the car between 2.00 hours and 2.30 hours.
average speed of the car
Solution:
Time Distance
hr km
1 :00 30
1:30 60
2:00 90
2:30 95
3:00 130
Plot time on x axis and distance on y axis.
e speed of the car between 2.00 hours and 2.30 hours = (95 - 90)/(0.5)
= 10 km/hr
Average speed = ( 130 - 30)/ ( 3 - 1) = 100/2 = 50 km/hr
car’s motion is not uniform as distance covered in equal interval of time is not equal
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