Understanding Net Force and Newton's Second Law

What is the net force on an object if two forces, 30 N to the left and 100 N to the right, are acting on it?

• 130 N to the left

• 70 N to the left

• 70 N to the right

• 130 N to the right

If a 20 kg mass is subjected to a net force of 70 N, what is its acceleration?

• 4.5 m/s²

• 2.5 m/s²

• 5.5 m/s²

• 3.5 m/s²

According to Newton's Second Law, what happens to acceleration if the force increases while mass remains constant?

• Acceleration becomes zero

• Acceleration increases

• Acceleration remains the same

• Acceleration decreases

In the equation F = ma, what does the 'F' represent?

• Frictional force

• Normal force

• Net force

• Gravitational force

Why is it important to consider the vector nature of force and acceleration in Newton's Second Law?

• Because they are scalar quantities

• To simplify calculations

• To ignore their direction

• To accurately describe their direction and magnitude