Speed, Velocity and Momentum Review

Front

What is speed?

Back

Speed is the distance traveled per unit of time, typically measured in meters per second (m/s).

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

How does velocity differ from speed?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented as p = mv.

Front

What is the law of conservation of momentum?

Back

The total momentum of a closed system before a collision is equal to the total momentum after the collision.

Front

What units are used to measure momentum?

Back

Momentum is measured in kilogram meters per second (kg·m/s).

Front

If an object has a mass of 2 kg and a velocity of 3 m/s, what is its momentum?

Back

Momentum = mass × velocity = 2 kg × 3 m/s = 6 kg·m/s.

Front

What does it mean if an object is stationary?

Back

An object is stationary if it is not moving, meaning its speed and velocity are both zero.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity over time.