A car moves with a speed of 60 km/hr. What will be the speed of the same car measured by a speed sensor which is placed in a bicycle which is moving with a speed of 12 km/hr in the opposite direction?

A car moves with a speed of 60 km/hr. What will be the speed of the same car measured by a speed sensor which is placed in a bicycle which is moving with a speed of 12 km/hr in the opposite direction? Correct Answer 72 km/hr

Speed of the same car measured by a speed sensor which is placed in a bicycle will be 72 km/hr. Since both car and the truck moves in the opposite direction therefore the relative velocity of the car with respect to bicycle will be 60+12=>72km/hr.
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