question_answer

Read the following and answer the questions from [6] to [10].

The distance travelled by a moving body is the actual length of the path covered by it, irrespective of the direction in which the body travels. It is a scalar quantity. Its SI unit is metre, e.g. consider the motion of an object moving along a straight path.

Speed of an object is defined as the distance travelled by it per unit time.

Speed of an obiect\[(v)=\frac{Distance\ (s)}{Time\ (t)}\]

Speed is a scalar quantity. The SI unit of speed is metre per second (m/s). The distance travelled by an object is either positive or zero, so the speed may be positive or zero but never negative.

Distance travelled by a train and time taken by it is shown in the following table

Time                                       Distance (in km) 10:00 am                                           0 10:30 am                                          25  10:40 am                                          28 11:00 am                                          40 11:15 am                                          42 11:30 am                                          50

Which of the following graph correctly shows distance-time relationship for given data?

A)

B)

C)

D)

Correct Answer: C

Solution :

[c] Distance-time graph is shown as