Question
A race track is in the shape of a rectangle with length
of 28 metres and area of 5600 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.Solution
Area of the track = length of track x breadth of track = 28 x breadth of track = 5600 So, breadth of track = 5600 ÷ 28 = 200 So, perimeter of the track = (28 + 200) x 2 = 456 metres So, speed of the car = (456/20) = 22.8 m/s Relative speed of the car with respect to the person = 22.8 + 4 = 26.8 m/s So, distance between the car and the person, 3 seconds before they cross each other = 26.8 x 3 = 80.4 metres
In which year, 14 major banks were nationalized on
Blind hoeing is recommended for –
What should be the spacing for standard variety of apple tree?
Â
When is the first harvest of finger millet recommended?
This method uses microwaves and silica gel for fast and effective flower dryingÂ
The bacterial disease, citrus greening is spread by _____ vector.Â
The planting of sugarcane by trench method ______Â
Which of the following is an exception to the Mendel’s second law i.e., law of independent assortment?
What is the total production of Cotton in India as per the third adv estimates of 2023-24?
Empty barrels, plastic containers or styrofoam bodies in cage culture can be used for the purpose?
