Question

a train travels at a constant speed of 80 km hour . draw a time distance graph for this situation use it to find
(a) the time taken to travel 160 km
(b) the distance covered in 2 1/2 hours​

Answer 1

Answer:

Step-by-step explan(a) V = 75km/hr

t = 2hr 30 min = 5/2 hr

S = v×t

= 75×(5/2)

= 187.5 Km

(b) v = 75 km/hr

S = 300 km

t = S/v

= 300/75

= 4 hr

(c) To draw a distance time graph ;

In a graph which denotes time along x--Axis and Distance along y -Axis, plot the coordinates :

(2.5,187.5) , (4,300)

Answer 2

Answer:

(a) Time taken to travel 160 km is 2 hours.

(b) The distance covered in $2\frac{1}{2}$ hours is 200 km.

Distance-time graph is shown below.

Step-by-step explanation:

Speed of train = 80 km/h

(a)

Train travels a distance = 160 km

Since speed = distance/time

⇒ Time taken = distance/speed

                       = $\frac{160}{80}$

                       = 2 hours

Thus, time taken to travel 160 km is 2 hours.

(b)

Now, time = $2\frac{1}{2}$ hour

                 = $\frac{5}{2}$ hour

So, Distance covered by train = speed × time

                                                  = 80 × $\frac{5}{2}$

                                                  = 200 km

Thus, the distance covered in $2\frac{1}{2}$ hours is 200 km.

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