1
Q
What is Newton’s first law?
A
A particle will stay at rest or move with constant velocity along a straight line until it is acted upon by an external force.
2
Q
What is Newton’s second law?
A
The rate of change of momentum of a particle is equal to, and in the direction of, the net force acting on it.
3
Q
What is Newton’s third law?
A
Every action has an opposite and equal reaction.
4
Q
What is Kepler’s first law?
A
The planets travel along elliptic paths with the sun at one focus.
5
Q
What is Kepler’s second law?
A
The line joining a planet to the sun sweeps out equal areas in equal times.
6
Q
What is Kepler’s third law?
A
The square of a planets orbital period is proportional to the cube of its semi-major axis.
1 Uni
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