Question

7. Show the shape of the distance-time graph for the motion in the
following cases:
(i) A car moving with a constant speed.
(ii) A car parked on a side road.
8. Which of the following relations is correct?
(i) Speed = Distance x Time
Distance
(ii) Speed =
Time
(iii) Speed =
Time
Distance
(iv) Speed
1
Distance x Time​

Answer 1

(i) A car moving with a constant speed. as we know, rate of change of distance with respect to time is known as speed. hence, distance is directly proportional time. so, distance time graph will be straight line with slope v as shown in figure.

ii) Hence the car is rest then the slope will be parallel to X Axis.

Answer 8 :-

$speed \: \: = \: \: \frac{distance}{time}$