Physics First Semester Final Exam Review part1 2024

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = ma.

Front

Define momentum in physics.

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

What does it mean for an object to accelerate?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

Front

Explain the concept of 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

What is the relationship between force, mass, and acceleration?

Back

According to Newton's Second Law, the relationship is given by the formula F = ma, where F is the net force, m is the mass, and a is the acceleration.

Front

What happens to an object's motion if the net force is zero?

Back

If the net force acting on an object is zero, the object will either remain at rest or continue to move at a constant velocity.

Front

Define friction and its role in motion.

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can cause an object to slow down or stop.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula a = (final velocity - initial velocity) / time.

Front

How does mass affect momentum?

Back

For a given velocity, an increase in mass results in an increase in momentum, as momentum is calculated by the formula p = mv.

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.