Like it or not, you’re accelerating
◣ QUESTION 1
The Sun exerts a gravitational force on the earth. As a result, what is the value of the earth’s acceleration through space (in SI units)?
◣ QUESTION 2
When an object is subjected to a constant and sustained acceleration, it is perceived to have weight. In the absence of this acceleration, if we say this object weighs 1 kg (for example), we really mean its ____. Fill in the blank.
◣ QUESTION 3
‘g‘ stands for gravitational force equivalent. An object experiencing 1 g of force on the earth (at sea level along the equator) will be accelerated by 9.8 m/s2. What’s the threshold in terms of g beyond which a human will start to experience dizziness?
◣ QUESTION 4
From the 1940s, the U.S. Air Force ran a series of tests to understand the effects of extreme acceleration on the human body. The most frequent volunteer on these tests was an officer named X, and his findings as well as the injuries he suffered informed many aspects of U.S. aerospace missions. After the tests he became known as the “fastest man on earth”. Name X.
◣ QUESTION 5
What is the force (in terms of g) that flight recorders onboard large civilian aeroplanes are expected to be able to survive so that they can be certified for use? Answers to July 2 quiz:
1. Russian city over which a meteorite exploded in 2013
– Ans: Chelyabinsk
2. The entity whose deity among the Evenki is Agda
– Ans: Thunder
3. Russian scientist who led the 1921 and the 1927 expeditions – Ans: Leonid Kulik
4. Name for asteroids once in the atmosphere
– Ans: Bolide
5. Occasion designated by the U.N. for June 30
– Ans: International Asteroid Day
Visual: Didymos
First contact: P.N. Moorthy | Arpit Kumar | K.N. Viswanathan