alleryतीच 180 m लांबीची आगगाडी 54 km/h वेगाने तिच्या दिशेने 18 km/h वेगाने धावणाऱ्या जॉगरला भेटते. त्याला ओलांडण्यासाठी लागणारा वेळ किती?
A12 seconds
B10 seconds
C8 seconds
D9 seconds
Answer & Solution
Correct answer: D. 9 seconds
सापेक्ष वेग 72 km/h = 20 m/s, म्हणून 180 / 20 = 9 seconds.
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