Physics First Semester Final

Front

What is displacement in physics?

Back

Displacement is the shortest distance from the initial to the final position of an object, along with the direction. It can be zero if the object returns to its starting point.

Front

State Newton's First Law of Motion.

Back

An object at rest stays at rest, and an object in motion continues in motion with a constant velocity unless acted upon by a net external force.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically measured relative to the ground.

Front

What type of energy conversion occurs when an object falls?

Back

The conversion from potential energy to kinetic energy occurs as the object falls.

Front

Define kinetic energy.

Back

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

Front

What does it mean for an object to have constant velocity?

Back

Constant velocity means that an object is moving at a steady speed in a straight line, with no acceleration.

Front

Explain the concept of inertia.

Back

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

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.

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated as W = F × d × cos(θ), where 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.