Physics Semester Review

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

If an object is moving at a constant speed in a circular path, what is its acceleration?

Back

The object has a centripetal acceleration directed towards the center of the circle.

Front

What does it mean if an object's acceleration is 0 m/s²?

Back

It means the object is either at rest or moving at a constant velocity.

Front

What is the shape of the orbits of planets around the Sun?

Back

The orbits of planets around the Sun are elliptical.

Front

How do you calculate average acceleration?

Back

Average acceleration can be calculated using the formula: a = (final velocity - initial velocity) / time.

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 a vector?

Back

A vector is a quantity that has both magnitude and direction, such as force, velocity, and acceleration.

Front

What is the significance of a frame of reference in motion?

Back

A frame of reference is a set of coordinates or a viewpoint used to measure and describe the motion of an object.

Front

What is the formula for calculating distance traveled when acceleration is constant?

Back

The formula is: distance = initial velocity × time + 0.5 × acceleration × time².