Question

figure represents the speed time graph for a particle. find the distance covered by the particle between t= 10 min. and t= 30min.

Answer 1

Distance = 0
Becoz graph is framing a straight line
Parallel to the x axis

Answer 2

Answer : Distance, d = 4.92 km

Explanation :

From the graph it is clear that the speed of a particle is constant i.e. 15 km/h or 4.1 m/s.

Area under speed time graph gives distance covered by the particle.

Distance covered by the particle in t = 10 min or 600 s :

$d=speed\times time$

$d=4.1\ m/s\times 600\ s$

$d=2460\ m$

Distance covered by the particle in t = 30 min or 1800 s :

$d=speed\times time$

$d=4.1\ m/s\times 1800\ s$

$d=7380\ m$

So, the distance covered by the particle between t = 10 min to t = 30 min is :

$d=7380\ m-2460\ m$

$d=4920\ m$

or

$d=4.92\ km$

Hence, this is the required solution.