Uniform Circular Motion and Gravitation

Uniform Circular Motion

100

The force that keeps an object moving in a circle?

What is Centripetal Force?

200

Direction of centripetal acceleration?

What is the center of a circle?

300

The equation for centripetal acceleration?

what is a=v²/r?

400

If speed doubles, what happens to acceleration?

what is quadruples?

500

A car rounds a curve of radius 50 m at 20 m/s what is its centripetal acceleration? 

what is 8 m/s²?

Gravity Basics

100

Who developed the law of universal gravitation?

Who is Issac Newton?

200

What is the force that attracts all masses to each other?

What is gravity?

300

The variable that represents gravity?

What is G?

400

The equation for gravitational force between two masses?

What is F = Gm₁m₂/r²?

500

If the distance between two objects doubles, what happens to the gravitational force?

what is 1/4?

Orbits

100

The path followed by a planet around a star?

what is an orbit?

200

The force that keeps planets in orbit around the sun?

what is gravity?

300

True or False: Astronauts in orbit experience no gravity.

What is False?

400

If a planet is farther away from a sun. its orbital speed will?

what is decrease?

500

All eight planets in our solar system travel in a continuous orbital path around this star.

What is the Sun?