A car is moving along a straight line say along OP in the following figure. from O to P in 18 s and returns from P to Q in 6.0s. What are the average velocity and
average
speed of the car in going (a) from O to P? and (b) from O to Pand back to Q?
R
- 1601208040
Q
3
5
8 8
9
10
11
40 80 120 160 200 240 280 320 360 400 240 360.400
m
X-axis, origin and positions of a car at different times.
6 Plot the Position-time graph of a car for the data given in the question no.5
plot the position time graph for 5th question
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Answer:
the average velocity is 3 sec
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Motion in a Straight Line
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Asked on December 26, 2019 by
Joshua Christina
A car is moving along a straight line say OP in the figure. It moves from O to P in 18 sec and returns from P and Q in 6 sec. What are average velocity of the car in going from
(a) O to P? (b) from O to P and back to Q?
question
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ANSWER
$$(a)$$
Displacement from O to P=360m
Time taken from O to P=18sec
Velocity of car =
Time
Displacement
=
18
360m
Avg. Velocity of car (O to P)=20ms
−1
Time taken from P to Q=6sec
Total time taken to move from O to P and back at Q,
T
′
=16+6=24
Displacement from P to Q=240m
Average speed of car from P to Q=
24sec
240m
=10ms
−1