Physics Review Fall Semester 2022-2023

Front

What is net force?

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration according to Newton's second law.

Front

How do you calculate net force in two dimensions?

Back

To calculate net force in two dimensions, use the Pythagorean theorem: Net Force = √(Fx² + Fy²), where Fx and Fy are the forces in the x and y directions.

Front

What is thrust?

Back

Thrust is the force that propels an object forward, typically produced by engines or propellers.

Front

What is the relationship between force and motion?

Back

According to Newton's first law, an object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = m * a, where m is mass and a is acceleration.

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 object's mass.

Front

What is the significance of 0 newtons of force?

Back

0 newtons of force indicates that an object is in a state of equilibrium, meaning it is either at rest or moving at a constant velocity.

Front

What does it mean for two objects to have the same speed?

Back

Two objects have the same speed when they cover equal distances in equal intervals of time, regardless of their direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be calculated as a = (final velocity - initial velocity) / time.

Front

What is gravitational acceleration (g)?

Back

Gravitational acceleration (g) is the acceleration due to gravity at the Earth's surface, approximately 9.81 m/s².