Physics First Semester Final Exam

Front

What is the net force acting on an object with varying mass and acceleration?

Back

The net force is determined by the equation F = ma, where F is the net force, m is the mass, and a is the acceleration. The object with the smallest acceleration experiences the smallest net force.

Front

What is the SI unit of velocity?

Back

The SI unit of velocity is meter/second (m/s).

Front

How is the change in an object's momentum calculated?

Back

The change in momentum is equal to the product of the force applied to the object and the time interval during which the force is applied.

Front

What type of energy is associated with an object's position?

Back

Potential energy is the energy associated with an object due to its position in a gravitational field.

Front

What is the magnitude of the gravitational force acting on an object?

Back

The magnitude of the gravitational force acting on an object is referred to as its weight.

Front

Define inertia in the context of physics.

Back

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

Front

What is kinetic energy and how is it calculated?

Back

Kinetic energy is the energy of an object due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

Explain the concept of work in physics.

Back

Work is done when a force causes an object to move. It is calculated as W = Fd cos(θ), where W is work, F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

Define momentum and its formula.

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.