Final Review - Forces

Front

What is the formula to calculate weight?

Back

Weight = mass × gravitational acceleration (W = m × g) where g ≈ 9.8 m/s².

Front

What is tension in a rope?

Back

Tension is the force exerted by a rope or string when it is pulled tight by forces acting from opposite ends.

Front

Define balanced forces.

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is unbalanced force?

Back

Unbalanced forces cause an object to accelerate, change direction, or change shape.

Front

How do you calculate mass from weight?

Back

Mass = Weight / gravitational acceleration (m = W / g).

Front

What is centripetal force?

Back

Centripetal force is the net force causing the inward acceleration of an object moving in a circular path.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v² / r, where v is the velocity and r is the radius of the circular path.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes direction.

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 at constant velocity unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = m × a).