Given below as a figure is the distance-time graph of the motion of an
(a) What will be the position of the object at 20 s?
(b) What will be the distance travelled by the object in 12 s?
(c) What is the average speed ofthe object?

Boojho goes to the football ground to play football. The distance-time graph of his journey from his home to the ground is given as figure.
(a) What does the graph between points B and C indicate about the motion of Boojho?
(b) Is the motion between 0 to 4 min uniform or non-uniform?
(c) What is his speed between 8 to 12 min of his journey.

Explain by giving example that how can we choose a suitable scale.

Distance between Bholu's and Golu's house is 9 km. Bholu has to attend Golu's birthday party at 7 0' clock. He started his journey from his home at 6 0' clock on his bicycle and covered a distance of 6 km in 40 min. At that point, he met Chintu and he spoke to him for 5 min and reached Golu's birthday party at 7 0' clock. With what speed, did he cover the second part of the journey? Calculate his average speed for the entire journey.

The given data regarding the motion of two different objects C and 0 is in a tabular form. Check them carefully and state whether the motion of the objects is uniform or non-uniform.

The graph given below shows the increase in the height of plant with time

(i) Write down the scale used.
(ii) What was the height of the plant on the 5th day and the 12th day?
(iii) How does the plant grow with time ?
(iv) What do you conclude for. the rate of growth of plant for the period not shown ?

Aman made a graph to show the relationship between the speed of a car and time

Look at the graph and answer the following questions:
(i) What has Aman shown on each axis?
(ii) What is the scale of the graph?
(iii) What is the speed of the car at 3.30 minutes?
(iv) What distance is covered by the car in 4 minutes?
(v) At what time the car has assumed constant speed?

Describe steps to construct a graph using the data given in the following table

(a) Define speed
(b) The distance between Delhi and Agra is 270 km. A train takes 3 hours to cover the distance. Calculate the speed of train.
(c) Show the shape of distance-time graph for a vehicle moving with a constant speed.

Two railway stations are 320 km apart from each other. Train-I covers this distance in 4.5 hours whereas train-If reaches the destination 10 minutes earlier, through it departs the station 20 minutes later.
Based on this information answer the following questions:
(i) What might be the reason that the train-If reaches the destination earlier?
(ii) Calculate the speed of both the trains.
(iii) If we consider that both the trains move with constant speed, then assign one distance-time graph for each train.