Question

A person travels from Point A to Point B for 30 meters towards south in 4 Seconds. Then he travels from Point B to Point C for 40 Meters towards east in 6 Seconds. What is his Average Speed?


1) 700 m/s
2) 70 m/s
3) 7m/s
4) 0.7 m/s ​

Answer 1

Answer:

Formula used

Hypotenuse =

\sqrt{ base \: + \: perependicuar \: } ^{2}

base+perependicuar

2

So hypotenuse = 33.10 ( approx .) which is the displacement

1) For average speed

Average speed = Distance/ time

Average speed = Distance/ time = 44m /10 sec = 4.4m/sec

2) For average velocity

Average velocity = Displacement / time

= 33.10/10 = 3.331 m/sec

Explaination on how to find displacement

:: In this case we can see that firstly the man goes south and then approaches East so ideally it should form a right angled triangle in which the shortest path i.e displacement would be the hypotenuse .

For explaination figure is provided above