A race track is in the shape of a rectangle with length of 25 metres and area of 4500 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 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 = 25 x breadth of track = 4500 So, breadth of track = 4500 ÷ 25 = 180 So, perimeter of the track = (25 + 180) x 2 = 410 metres So, speed of the car = (410/10) = 41 m/s Relative speed of the car with respect to the person = 41 + 4 = 45 m/s So, distance between the car and the person, 3 seconds before they cross each other = 45 x 3 = 135 metres
Riceyness is physiological disorder related to _______ crop.
Which of the following pyramid is always upright?
What is the seed rate of hybrid cotton with a spacing of 120 × 60 cm?
Which of the following organelles is responsible for dark reaction in plant cells?
Women Farmers Day is observed on
The soils of very cold climates which are defined as containing permafrost within two meters of the soil surface belongs to the order
The gynoecium occupies the highest position while the other parts are situated below it. Which type of flower is that?
Match List I with List II
Choose the correct answer ...
The Hydrolytic decomposition of protein and release of amines and amino acids is termed as ………………………………
...The photorespiration process takes place in which of the following organelles?