untittled flashcard

Front

Definition of Normal Force

Back

The force exerted by a surface to support the weight of an object, acting perpendicular to the surface.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

Define Kinetic Energy.

Back

The energy that an object possesses due to its motion, calculated as KE = 1/2 mv^2, where m is mass and v is velocity.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

Define Work in physics.

Back

Work is done when a force causes displacement, calculated as W = F * d * cos(θ), where W is work, F is force, d is displacement, and θ is the angle between the force and displacement.

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 potential energy?

Back

PE = mgh, where PE is potential energy, m is mass, g is the acceleration due to gravity, and h is height.

Front

Define Friction.

Back

A force that opposes the relative motion of two surfaces in contact.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic friction acts on objects that are sliding past each other.