Speed, Velocity, Momentum Definitions Flashcard

Front

What is Newton's 2nd Law of Motion?

Back

Force = Mass x Acceleration. It states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the formula to calculate momentum?

Back

Momentum = Velocity x Mass.

Front

What are the units for speed?

Back

Common units for speed include miles/hour, meters/second, centimeters/second, and kilometers/hour.

Front

What are the units for velocity?

Back

Velocity is measured in the same units as speed: miles/hour, meters/second, centimeters/second, and kilometers/hour.

Front

Which of the following is a unit of momentum?

Back

Momentum is measured in kg·m/s or equivalently in km/hr x kg.

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 inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

According to Newton's 2nd Law, if the mass of an object increases, the acceleration decreases for a given force.

Front

What does a speed of 60 km/h mean?

Back

It means that an object travels 60 kilometers in one hour.

Front

How do you convert speed from meters/second to kilometers/hour?

Back

To convert m/s to km/h, multiply by 3.6.