Question

21. Sushila is walking with a constant speed of
4.2 km/h. How much distance will she cover
in 40 minutes?​

Answer 1

Answer:

2.8 km

Explanation:

The speed is the change of distance with time

v = d/t

The speed in m/s will be

v = (4.2 km/h)    *   $\dfrac{1000}{60*60}$ = 1.16 m/s.

Solve for d, we get the distance by

d = v.t = (1.16 m/s) (40* 60 s) = 2800 m = 2.8 km

Answer 2

Answer:

Your correct answer is 2.8 km.

{in place of 2400 have to write 400 because when we divide 2400 by 6 answer will come 400} 》》 [plz don't write this because this is for your explanation]

Explanation:

Given ,

Speed = 4.2 km/h or 7/6

Time = 40 min or 2400 sec

Speed = Distance / Time

Distance = Speed × Time

Distance = 7/6 × 2400

= 2800

= 2.8 km

Thank You ......

I hope it is useful for You ....

And Please Mark me As In BRANSLIST please

Have a good day to all