Newtons laws of gravitation

Newton's Law of Gravitation

A. describes the shape of the orbit of a planet.

B. describes the speed with which a planet orbits the Sun.

C. compares the size of one planet's orbit to another.

es

ing

D. explains how to determine the strength of the gravitational force between the planet and the Sun.

D. explains how to determine the strength of the gravitational force between the planet and the Sun.

Newton found that orbits can be

A. ellipses, circles, hyperbolas and parabolas (bound and unbound orbits)

B. only ellipses and circles (bound orbits)

C. hyperbolas and parabolas (unbound orbits)

A. ellipses, circles, hyperbolas and parabolas (bound and unbound orbits)

Which of the following scenarios can be described as acceleration?

1. You travel west at 60 mph for 5 mins on the highway.

2. You travel at 60 mph for 15 seconds while the highway curves.

3. You drop a ball from your hand and it falls to the ground vertically (i.e in a straight line).

4. You are sitting at your desk reading this question.

1, 2. 3

1 (You travel west at 60 mph for 5 mins on the highway.)

4 (You are sitting at your desk reading this question.)

1 (You travel west at 60 mph for 5 mins on the highway) and 4 (You are sitting at your desk reading this question.)

3 (You drop a ball from your hand and it falls to the ground vertically.)

2 (You travel at 60 mph for 15 seconds while the highway curves.)

2 (You travel at 60 mph for 15 seconds while the highway curves) and 3 (You drop a ball from your hand and it falls to the ground vertically.)

1. 2. 3,4

2 (You travel at 60 mph for 15 seconds while the highway curves) and 3 (You drop a ball from your hand and it falls to the ground vertically.)

When you read the speedometer in your car, this tells you your

A. acceleration

B. velocity

C. mass

D. force

F. speed

F. speed

Chapter 4, Question 32, page 103 (with one more answer choice):

If Earth were twice as far as it actually is from the Sun, the force of gravity attracting Earth to the Sun would be

A. four times as strong.

B. twice as strong.

C. one-quarter as strong.

D. half as strong.

C. one-quarter as strong.

The units of mass are

A. meters/second

B. Newtons

C. meters/second

D. kilograms

D. kilograms

The units of force are

A. meters/ second

B. Newtons

C. meters/second?

D. kilograms

B. Newtons