Forces and Motion

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 a net external force.

Front

Define force.

Back

A push or pull on an object resulting from the object's interaction with another object, measured in Newtons (N).

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a).

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What does it mean for forces to be balanced?

Back

Balanced forces occur when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces occur when the net force acting on an object is not zero, causing the object to accelerate in the direction of the net force.

Front

If a book is resting on a table, what forces are acting on it?

Back

The gravitational force pulling it down (weight) and the normal force from the table pushing it up, which are equal in magnitude.

Front

How do you determine the direction of motion when multiple forces are applied?

Back

The direction of motion is determined by the net force, which is the vector sum of all forces acting on the object.

Front

What is the acceleration of an object if a net force of 10N is applied to a mass of 2kg?

Back

Acceleration (a) = Force (F) / mass (m) = 10N / 2kg = 5 m/s².

Front

What is the effect of mass on acceleration when a constant force is applied?

Back

As mass increases, acceleration decreases for a constant force, according to Newton's Second Law (F = ma).