Vivek R.

A train leaves New Delhi railway station at 09:00 AM and reaches Jaipur, which is at a distance of 260 km at 12:45 PM. The train reaches Alwar (at distance 150 km from New Delhi) at 11:30 AM and stops there for 15 minutes. i. What is the reference point for the motion of the train? ii. What is the average speed to the train between Alwar and Jaipur?

Flora is the name given to the collective plant life that grows or once grew in a certain area or during a given time period. It usually refers to the native plant life present but does include new species that have been introduced as well. ‘Flora’ was a goddess of flowers and plants. In the Roman mythology, she was the goddess of fertility. And so, the plant kingdom came to be known as Flora. Examples: Manchineel tree, Giant redwood trees, Nepenthes, Welwitschia Mirabilis. Fauna on the other hand, is the name given to collective animal life that lives or was once found in a certain area or time period. In Latin, Fauna is derived from three different sources. Fauna by itself was the name of a Roman goddess representing fertility and the earth and Faunus was another Roman god. And then there were Fauns, which were known to be forest spirits. Examples: Coral, Southern Toadlet, Eltham copper butterfly,

You can get the direct/formal definition everywhere but you can only understand the concept if you feel it by mapping it to a real life scenario. Imagine you are riding a bike, below are the possible two variations: 1. Riding alone: You need 5 seconds (say) to reach up to 60 km/h. 2. Riding with your friend: You need 8-9 seconds to reach up to 60 km/h. The difference comes because acceleration of your bike is inversely proportional to the mass on the bike i.e., in the first case, mass was less and hence acceleration was more. Similarly if we want to maintain the acceleration, then we need to apply more force on the accelerator of the bike. So, acceleration is directly proportional on the force applied on the body.