Physics Fundamentals

What is the formula to calculate velocity?

• Velocity = Distance / Time.

• Velocity = Acceleration x Time.

• Velocity = Mass x Acceleration.

• Velocity = Change in position / Change in time

What is the difference between speed and velocity?

• Speed is scalar, velocity is vector.

• Speed is a vector quantity, velocity is a scalar quantity.

• Speed is measured in meters per second, velocity is measured in kilometers per hour.

• Speed and velocity are the same thing.

What is a vector quantity?

• A vector quantity is a physical quantity that has neither magnitude nor direction.

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

• A vector quantity is a physical quantity that has only direction.

• A vector quantity is a physical quantity that has only magnitude.

Give an example of a vector quantity.

• speed

• velocity

• distance

• time

What is a frame of reference?

• A frame of reference is a tool used to measure the weight of objects.

• A frame of reference is a type of camera used in photography.

• A frame of reference is a term used in computer programming to describe a specific point in code execution.

• A frame of reference is a coordinate system used to describe the position and motion of objects.

How does a frame of reference affect the measurement of motion?

• By completely altering the direction of the motion.

• By distorting the actual motion and making it appear faster or slower.

• By providing a point of comparison or perspective from which motion is observed and measured.

• By having no effect on the measurement of motion.

What is a force?

• A force is a push or pull.

• A force is a form of matter.

• A force is a type of energy.

• A force is a measurement of time.

State Newton's first law of motion.

• An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction, unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stay in motion with a different speed and in a different direction, unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stop, unless acted upon by an external force.

• An object at rest will start moving, and an object in motion will change its speed and direction, unless acted upon by an external force.

What is inertia?

• The force that causes objects to move

• Resistance to changes in motion or rest.

• The force that causes objects to change direction

• The force that causes objects to stop

What is the formula to calculate gravitational force?

• F = G * (m1 * m2) / r^2

• F = A * (m1 / m2) / r^2

• F = G * (A1 + A2) / r^2

• F = G * (m1 * m2) / r