If a car moves with a speed of 15 Km/h then 20 Km/h and lastly 18 Km/h on a straight road this type of motion is:
1 point
(a) Linear motion
(b) Non-uniform motion
(c) Periodic motion
(d) circular motion
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6
Answer:
Speed of car in first 15 minutes = 40 km/h
Distance covered = speed × Time taken
60 minutes = 1 hour
15 minutes =
60
15
hour
Distance covered = 240×
60
15
=10km
Speed of car in next 15 minutes = 60 km/h
Distance covered = 60×
60
15
=15km
∴ Total distance covered = (10+15)km = 25 km
∴ 25 km is correct
hope this will help you!!!
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