Question

please tell the answer​

Answer 1

Answer:

speed is distance/time taken

d = 420000m

time taken = 8400 sec

speed is 50m/s

Explanation:

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Answer 2

Answer:

3km/hours

Explanation:

Given:- distance=420km

Time=2hours 20min

To find:-speed=?

solution:-

let 1hours is 60min

then 2hours 20min is 140min----{120min + 20min =140min}

we know that speed formula

.:speed= distance/time

=420/140

=3km/hr

.:speed of the car is 3km/hr