Question

32. Two trains of lengths 70 m and 90 m are moving in opposite directions at 10ms and m/s, respectively. Find the time taken by trains to cross each other.
(a) 10 s
(b) 8 s
(c) 12 s
(d) 16 s
(e) None​

Answer 1

Answer:

The answer is 10s

Step-by-step explanation:

According to the formula,

Required time = x+yu+v

Here, x = 70 m. y = 90 m, u = 10 m/s and v = 6 m/s

Therefore, Required time = Therefore, x=24004=600

70+9010+6=16016 = 10 s