Question

A race track is in the shape of a rectangle with length of 65 metres and area of 9750 m2. A car takes 10 seconds to make one lap around the perimeter of this track. If the car and a person whose speed is 7 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.

Q: Answer-A race track is in the shape of a rectangle with length of 65 metres and area of 9750 m2. A car take...

Area of the track length of track x breadth of track 65 x breadth of track 9750 So, breadth of track 9750 65 150 So, perimeter of the track 65 150 x 2 430 metres So, speed of the car 43010 43 ms Relative speed of the car with respect to the person 43 7 50 ms So, distance between the car and the person, 3 seconds before they cross each other 50 x 3 150 metres