Force and Motion

Front

What is the definition of force in physics?

Back

Force is a vector quantity that represents an interaction that causes an object to change its velocity, direction, or shape. It is measured in Newtons (N).

Front

What is Newton's First Law of Motion?

Back

Newton's First Law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = m * a, where F is force, m is mass, and a is acceleration.

Front

What is the difference between mass and weight?

Back

Mass is a measure of the amount of matter in an object, while weight is the force exerted by gravity on that mass. Weight is calculated as W = m * g, where g is the acceleration due to gravity.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity and is measured in meters per second squared (m/s²).

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is friction and how does it affect motion?

Back

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

Front

What is the role of gravity in motion?

Back

Gravity is a force that attracts two bodies towards each other, affecting the motion of objects, especially those in free fall.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is the energy of an object in motion, while potential energy is the stored energy of an object due to its position or state.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 * m * v², where m is mass and v is velocity.