Physics Semester Exam Review Part 3

Front

What does Newton's first law of motion state?

Back

An object in motion will remain in motion unless acted upon by an unbalanced force.

Front

What force causes an object to travel in a parabolic arc?

Back

Gravity.

Front

What is the principle behind the backward motion of a boat when a person steps forward onto the dock?

Back

For every action, there is an equal and opposite reaction.

Front

If two forces are applied to an object in the same direction, how do you calculate the net force?

Back

Add the magnitudes of the forces together.

Front

What is the velocity of a thrown baseball at its highest point?

Back

0 m/s.

Front

Define inertia in the context of Newton's first law.

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating net force?

Back

Net Force = Mass x Acceleration.

Front

Explain the concept of gravitational force.

Back

Gravitational force is the attraction between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the significance of the acceleration due to gravity on Earth?

Back

It is approximately 9.8 m/s² and affects the motion of all objects in free fall.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object, acting in the opposite direction to the applied force.