8.7AB, 8.6E, 7.7A Quiz

What happens to an object's acceleration if the force applied to it increases while its mass stays the same?

• It decreases

• It remains the same

• It increases

• It stops moving

A 2 kg object accelerates at 4 m/s². What is the net force acting on it?

• 2 N

• 4 N

• 6 N

• 8 N

A cart is pushed with a force of 15 N and accelerates at 3 m/s². What is the mass of the cart?

• 3 kg

• 5 kg

• 15 kg

• 45 kg

If two objects have the same net force acting on them but one has twice the mass, how will their accelerations compare?

• The heavier object will have half the acceleration

• The lighter object will have half the acceleration

• Both will accelerate the same

• The heavier object will not accelerate at all

A rocket launching into space accelerates as it burns fuel. How does Newton’s Second Law explain this?

• As the rocket’s mass decreases, its acceleration increases for the same force

• The rocket stops accelerating once in space

• Acceleration and force are unrelated to mass

• The force of gravity prevents the rocket from accelerating

Which of Newton’s Laws explains why passengers lurch forward when a car suddenly stops?

• First Law

• Second Law

• Third Law

• Law of Conservation of Energy

A book rests on a table. What force prevents it from falling through?

• Friction

• Gravity

• Normal force

• Air resistance

A rocket pushes gas downward to lift off. Which of Newton’s Laws explains this motion?

• First Law

• Second Law

• Third Law

• Law of Universal Gravitation

A soccer ball is kicked with a strong force and another is kicked with a weak force. How will their accelerations compare?

• The ball with greater force will accelerate more

• Both will accelerate the same

• Acceleration does not depend on force

• The ball with the weaker force will accelerate more

How do Newton’s Three Laws work together in a roller coaster system?

• The First Law keeps passengers moving until a force stops them

• The Second Law explains changes in acceleration due to varying forces

• The Third Law describes how the tracks push back on the coaster

• All of the above