2D Motion - Vocabulary

Front

What are tangential vectors?

Back

Vectors that are perpendicular to the radius of a circle.

Front

What is Pythagorean's theorem?

Back

a² + b² = c², where c is the hypotenuse of a right triangle.

Front

What does the Greek letter θ represent?

Back

The angle between the leg and the hypotenuse in a right triangle.

Front

What happens at the apex (peak) of a projectile?

Back

The vertical velocity is zero.

Front

What is centripetal motion?

Back

Centripetal motion refers to circular motion.

Front

Define projectile motion.

Back

Projectile motion is the motion of an object thrown into the air, subject to gravitational acceleration.

Front

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

Back

Range = (v² * sin(2θ)) / g, where v is the initial velocity, θ is the launch angle, and g is the acceleration due to gravity.

Front

What is the difference between scalar and vector quantities?

Back

Scalar quantities have magnitude only, while vector quantities have both magnitude and direction.

Front

What is the significance of the acceleration due to gravity (g)?

Back

It is the acceleration experienced by an object due to Earth's gravitational pull, approximately 9.81 m/s².

Front

What is the role of air resistance in projectile motion?

Back

Air resistance opposes the motion of the projectile, affecting its trajectory and range.