A race track is in the shape of a rectangle with length of 22 metres and area of 2200 m2. A car takes 20 seconds to make one lap around the perimeter of this track. If the car and a person whose speed is 4 m/s, started moving at the same time along the perimeter of the track but in opposite directions, then find the distance between the car and the person, 3 seconds before they cross each other.
Area of the track = length of track x breadth of track = 22 x breadth of track = 2200 So, breadth of track = 2200 ÷ 22 = 100 So, perimeter of the track = (22 + 100) x 2 = 244 metres So, speed of the car = (244/20) = 12.2 m/s Relative speed of the car with respect to the person = 12.2 + 4 = 16.2 m/s So, distance between the car and the person, 3 seconds before they cross each other = 16.2 x 3 = 48.6 metres
Seven girls A, B, C, D, E, F and G sit in a row facing towards the north (not necessarily in the same order). D sits fifth to the right of A. D does not...
Eight people K, M, F, I, L, J, H and G are sitting in a straight row and all are facing north. K sits third from one of the extreme ends of the line. M ...
Who sits 2nd to the left of J?
Which of the following is true?
What is position of V with respect to the one who visit Kanpur?
Who among the following sits third to the right of C?
How many persons sit between T and the one who faces K?
Who among the following person sits second to the left of L?
Seven friends J, K, L, M, P, Q and R are sitting in a row facing east. K is sitting between Q and J. R is to the immediate left of M. Two friends are si...
How many persons are older than Q?
