Regents Physics 1st Half Review

Front

What is a vector?

Back

A vector is a quantity that has both magnitude and direction.

Front

What does free fall motion look like on a graph?

Back

Free fall motion is represented by a parabolic graph, showing constant acceleration due to gravity.

Front

What are changes in speed, direction, or both called?

Back

Acceleration.

Front

If a ball is thrown horizontally and another is dropped from the same height, which hits the ground first?

Back

Neither; they hit the ground at the same time.

Front

How fast is an object falling after 2 seconds?

Back

After 2 seconds, an object in free fall is going 19.6 m/s.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = (final velocity - initial velocity) / time.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.8 m/s².

Front

Define displacement.

Back

Displacement is the shortest distance from the initial to the final position of an object, including direction.

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 both speed and direction.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.