Question

a car travels a distance of 15 m in 4 second and again it travels a distance of 20 m in 5 second what will be the average speed of the car​

Answer 1

Answer:

man I dunno the answer imma just wanna humhum here

Answer 2

Answer:

The Distance travelled by car = 15 km

Time taken = 20 minutes

(i) speed of car in km\ h^{-1}km h

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1 minute =\ \frac{1}{60}hour=

60

1

hour

Therefore 20 minutes = \frac{1\times20}{60}=\frac{1}{3}hour

60

1×20

=

3

1

hour

Speed = distance/time taken

= \frac{15}{\frac{1}{3}}

3

1

15

= 15\times3=45\ km\ h^{-1}15×3=45 km h

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(ii) Speed of the car in m\ s^{-1}m s

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1 km = 1000 m

15 km = 15000 m

1 minute = 60 sec

20 minutes = 60\times20=1200\60×20=1200 seconds

Speed = distance/time taken

= \frac{1500\ m}{1200\ \sec}

1200 sec

1500 m

= 12.5\ m\ s^{-1}12.5 m s

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