Question

Question 3: A train 450 m long crossed a person who was moving at a speed of 8 km/hr in the opposite direction in 15 seconds. Subsequently it over took a scooter moving in the same direction as the first person and passed him in 10 seconds. Find the speed of the scooter. (In Km/hr)
A) 56 B) 60 C) 62 D) 64​

Answer 1

Answer:

Given:

Length of the train = 450m

Speed of the train = 50 m/s

Time taken to cross the man = 10 seconds

Formula used:

Speed(S) = Distance(D)/Time(T)

Calculation:

Let the speed of the man be x m/s

Speed at which train crossed the man = 450/10 m/s

⇒ 45m/s

In the same direction, the speed subtracts

⇒ (50 – x) m/s = 45 m/s

⇒ x = 5 m/s

∴ The speed of the man is 5 m/s.