Let's do exercises

(1) Use the table given below to make another graph of the race between the tortoise and rabbit.

Time (min)	Rabbit (meter)	Tortoise (meter)
0	1	0
1	20	10
2	40	20
3	60	30
4	60	40
5	60	50
6	60	60
7	60	70
8	60	80
9	60	90
10	60	100
11	87	100
11.5	100	100

(2) A goods train is going from Itarsi station to Bhopal station. At 12:00 PM it leaves Itarsi and after 15 minutes at an upward track, its engine and brakes fail and the train rolls backward for 5 km and stops on a plane track. The driver and the train guard inform the controller. A new engine takes 20 minutes to arrive there. The new engine pulls the train and helps it to cross the valley in next 20 minutes. The graph and table given below is based on this story but are left incomplete. Can you draw the remaining portion of the graph and fill in the table as well?

Time (min)	Distance (km)
12.00	0.0
12.15	......
......	10
12.40	.....
......	20

(3) The graph given below shows the journey of two sisters Kimi and Ziki from their home to the school. Kimi takes a stop at a book shop. After a while Ziki joins her. Then from the shop they go to the school together. Fill up the table given below using the information given in the graph.

Time (sec)	Kimi (m)	Ziki (m)
0
5
10
15
20
25
30
35

(i) Who takes less time to reach the shop?
(ii) For how long did Kimi stay at the shop?
(iii) Can you identify the part of the line depicting Kimi's stay at the shop?
(iv) What was the distance between (a) the school and the shop, and (b) between the home and the shop?

(4) Vimal and Abid participate in a 1000 meter race. The slope of the graph shows their run. Who ran faster, Abid or Vimal? Why do you think so?

(5) A school bus with kids leaves the village at 10 AM. At 11 AM when it reaches the bridge, the river is flooded and flowing over the bridge. The bus has to stop there for two hours. At 1 PM, when the water level goes down and is lower than the bridge, the bus crosses over to the other side. It takes the bus another hour to reach the school. By that time the school is already over. The bus begins its return journey right away. In just one hour it drops the kids at the village. Depict this story on a graph.