Physics Review - Kinematics

Acceleration is the rate of change of velocity of an object with respect to time. It can be positive (speeding up) or negative (slowing down).

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

Velocity (v) is calculated using the formula: v = distance / time.

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.

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

If an object is dropped from rest, its initial velocity is 0 m/s.

Negative acceleration indicates that an object is slowing down or decelerating.

The final velocity (v) can be found using the formula: v = initial velocity + (acceleration * time).

The resultant velocity can be found using the Pythagorean theorem: resultant velocity = √(v₁² + v₂²).

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