2D Motion - Vocabulary

Front

What type of path shape does a projectile shot at an angle have?

Back

A parabolic path.

Front

What is the term for the orange line in a circle?

Back

Radius.

Front

What is centripetal motion?

Back

Centripetal motion is a fancy way of saying circular motion.

Front

What is the term for the red line in a circle?

Back

Diameter.

Front

What are tangential vectors?

Back

Vectors that are perpendicular to the radius of a circle.

Front

What is the definition of projectile motion?

Back

Projectile motion is the motion of an object thrown into the air with an initial velocity, affected only by gravity.

Front

What is the formula for calculating the range of a projectile?

Back

Range = (initial velocity^2 * sin(2*angle)) / g, where g is the acceleration due to gravity.

Front

What does the term 'arc' refer to in circular motion?

Back

An arc is a segment of a circle's circumference.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes direction.

Front

What is the acceleration due to gravity on Earth?

Back

Approximately 9.81 m/s².