_12) N3L Problems

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma, where F is the net force, m is the mass, and a is the acceleration.

Front

Define net force.

Back

Net force is the total force acting on an object when all the individual forces acting on it are combined. It determines the object's acceleration.

Front

What is the formula to calculate acceleration?

Back

Acceleration (a) can be calculated using the formula: a = F/m, where F is the net force applied to the object and m is its mass.

Front

If a 20-N net force acts on a 2.0 kg object, what is its acceleration?

Back

10 m/s² (using the formula a = F/m, where F = 20 N and m = 2 kg).

Front

What does it mean if an object is in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, resulting in no acceleration.

Front

How does mass affect acceleration when the same force is applied?

Back

The greater the mass of an object, the less acceleration it will have when the same force is applied, according to Newton's Second Law.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of an object sliding across a surface. It acts parallel to the surface.

Front

If a crate is pushed with a force equal to the sliding friction, what will be its acceleration?

Back

0 m/s², because the net force is zero (pushing force equals frictional force).

Front

What is the relationship between force, mass, and acceleration?

Back

The relationship is defined by Newton's Second Law: F = ma, meaning force equals mass times acceleration.

Front

What happens to the acceleration of an object if the applied force is increased?

Back

If the applied force increases while the mass remains constant, the acceleration of the object will also increase.