Astro 7N Unit 1 ACTUAL UPDATED Exam Questions and CORRECT Answers

Astro 7N Unit 1 ACTUAL UPDATED
Exam Questions and CORRECT Answers
What is mars' lower gravity a result of? - CORRECT ANSWER - its mass and radius



Newton's First Law - CORRECT ANSWER - An object at rest stays at rest and an object
in motion stays in motion with the same speed and in the same direction unless acted upon by an
unbalanced force.


Newton's Second Law - CORRECT ANSWER - the acceleration of a body due to a force
will be in the same direction as the force, with a magnitude directly proportional to its mass
(F=ma)


Newton's Third Law - CORRECT ANSWER - For every action there is an equal and
opposite reaction


How do the planets affect the sun? - CORRECT ANSWER - they exert an equally strong
pull on the sun, causing it to move slightly


If you apply the same force to a pebble and a boulder what will happen? - CORRECT
ANSWER - the pebble will move faster



Why do you weigh less on Mars? - CORRECT ANSWER - because the acceleration on
mars is different


weight = - CORRECT ANSWER - mass x gravity



Newton's Law of Universal Gravitation - CORRECT ANSWER - Every object in the
universe attracts every other object