Great Scientists: Sir Isaac Newton

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Questions and Answers

In which book did Sir Isaac Newton present his laws of motion, equations of motion, and theory of gravity?

  • The Mathematical Principles of Natural Philosophy
  • Opticks
  • Principia (correct)
  • Philosophiæ Naturalis Principia Mathematica

What did Sir Isaac Newton derive mathematically with his theory of gravity?

  • Electromagnetic field equations
  • Equations of motion
  • Kepler's laws (correct)
  • Laws of thermodynamics

What was not known about planetary motions before Newton's theory of gravity?

  • The color of the planets
  • The temperature of the planets
  • The size of the planets' orbits
  • The reason why planets move in the way described by Kepler’s laws (correct)

What happens to the stone when the string is released after rotating it in a circle?

<p>It flies off along a tangent to the circle (B)</p> Signup and view all the answers

Where was Sir Isaac Newton born?

<p>England (C)</p> Signup and view all the answers

What is the name of the force that acts on an object moving along a circle and is directed towards the centre of the circle?

<p>Centripetal force (C)</p> Signup and view all the answers

What did Newton invent that has wide-ranging applications in physics and mathematics?

<p>Calculus (A)</p> Signup and view all the answers

What force must be exerted by the Earth to attract the moon towards itself?

<p>Gravitational force (B)</p> Signup and view all the answers

What is the name of the telescope that Newton was the first scientist to construct?

<p>Reflecting telescope (D)</p> Signup and view all the answers

Do the other planets in the solar system revolve around the Sun in a similar fashion?

<p>Yes, and similar force is acting on them (A)</p> Signup and view all the answers

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