plz plz plz help mefind the time after which police caught the culprit.
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Explanation:
VP = 90 km/h = 25 m/s. VC = 72 km/h = 20 m/s.
In 10 sec culprit reaches at point B from A. Distance converted by culprit S=vt=20×10=200m.
At time t = 10 sec the police jeep is 200 m behind the culprit Time=
v
s
=
5
200
=40s. (Relative velocity is considered).
In 40 s the police jeep will move from A to a distance S, where S=vt=25×40=1000m=1.0km away. ∴ The jeep will catch up with the bike, 1km far from the turning.
December 27, 2019
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