Collect information about the space missions undertaken by sunita williams.

Question 1. Fill in the blanks and explain the statements with reasoning: a. If the height of the orbit of a satellite from the earth’s surface is increased, the tangential velocity of the satellite will ……………… Answer: If the height of the orbit of a satellite from the earth’s surface, is increased, the tangential velocity of the satellite willdecrease. Explanation: The gravitational force (F) exerted by the earth on the satellite will decrease if the height of the orbit of the satellite from the earth’s surface is increased. Hence, the tangential velocity of the satellite will decrease. The formula b. The initial velocity (during launching) of the Mangalyaan must be greater than ………… from the earth. Answer: The initial velocity (during launching) of the Mangalyaan must be greater thanthe escape velocityfrom the earth. Explanation: If a satellite is to travel beyond the gravitational pull of the earth, its velocity must be more than the escape velocity from the earth. [Note: The velocity must be atleast equal to the escape velocity. Refer the definition of escape velocity.] Question 2. State with reasons whether the following statements are true or false. a. If a spacecraft has to be sent away from the influence of the earth’s gravitational field, its velocity must be less than the escape velocity. Answer: False. Explanation: The escape velocity of a body is the minimum velocity with which it should be projected from the earth’s surface, so that it can escape the influence...

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"I grew up in a family with dad who immigrated from India, and my mother who was an X-ray technician in a hospital, they met each other when he was going through residency. I came from a humble family, me, my brother, we all knew that we should work hard, I never envisioned to be an astronaut. As a child I liked swimming, I was an athlete and I liked animals and wanted to be a veterinary doctor," Williams said. The daughter of neuroanatomist Dr Deepak Pandya and his wife, Bonnie, of Massachusetts, Williams graduated from the US Naval Academy, became an engineer and a test pilot before being selected by NASA's Astronaut Candidate School in 1998. Nasa's unmanned Mars 2020 Perseverance rover, which is provisionally slated for launch on July 30, could pave the way for a manned mission to the Red Planet subsequently, Indian-American astronaut, Sunita Williams, stated. "We should go to Mars. It is entirely a different place and it is important we plan how to sustain there. I am sure this will happen in our generation," she said. Watch the full interview here: She said that Nasa's Artemis mission, which aims to put a man and the first woman in the south pole region of the moon by 2024, will also help in planning a human mission to the Red Planet. "Nasa is working with oceanographic institutes, planning a flight to one of Jupiter's moons by sending a submarine to its ocean," she added. The role of this mission will be in the area of astrobiology. She said that the view of earth fr...