Question

1. ________ is the force that keeps planets in their orbits around the sun. 2. the law of universal gravitation depends on two main factors: mass and ______. 3. newtons first law of motion is also called the law of ______. 4. according to newtons second law, force equals mass times ______. 5. newtons third law states that for every action, there is an equal and ________. choose the correct answer from the choices for each question. 6. what happens to the force of gravity as the distance between two objects increases? a) it gets stronger b) it gets weaker c) it stays the same d) it disappears 7. which law explains why you move forward in a car when it suddenly stops? a) newtons first law b) newtons second law c) newtons third law d) the law of conservation of energy 8. if the mass of a planet increases, what happens to its gravitational pull? a) it decreases b) it stays the same c) it increases d) it disappears 9. what is the equation for force in newtons second law? a) f = m + a b) f = m - a c) f = m * a d) f = m / a

Explanation:

1. Gravity is the force that keeps planets in orbit.
2. The Law of Universal Gravitation depends on mass and distance.
3. Newton's First Law is the law of inertia.
4. Newton's Second Law: F = ma (force equals mass times acceleration).
5. Newton's Third Law: for every action, there is an equal and opposite reaction.
6. The force of gravity weakens as distance between objects increases, according to the inverse - square law.
7. Moving forward in a car when it stops is due to inertia (Newton's First Law).
8. Gravitational pull increases with an increase in mass.
9. The equation for force in Newton's Second Law is F = m * a.

Answer:

1. Gravity
2. Distance
3. Inertia
4. Acceleration
5. Opposite
6. b) It gets weaker
7. a) Newton's First Law
8. c) It increases
9. c) F = m * a