Science, asked by ganesh0859, 2 months ago

If the athlete covers 100m in 20seconds then her speed in km/h is __________.

(A) 19 km/h (B) 18 km/h

(C) 20 km/h (D) 5 km/h​

Answers

Answered by gklmukherjee
0

Answer:

Question 1:

Which of these activities can be measured in hours?

(a) writing one page

(b) eating a sandwich

(c) a journey from Chennai to Mumbai

(d) watching a TV serial

ANSWER:

(c) A journey from Chennai to Mumbai

Writing a page and eating a sandwich need a smaller unit than hour. Watching a TV serial can be measured in hours, but the most appropriate option is the journey from Chennai to Mumbai.

Question 2:

The speed of a moving object means

(a) how far it goes.

(b) how long it goes on moving.

(c) how far it goes in a certain time.

(d) none of these.

ANSWER:

(c) how far it goes in a certain time

Speed is the rate at which an object covers a given distance in a particular period of time.

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