Newton's Laws of Motion

What does Newton's second law of motion state?

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• An object in motion stays in motion unless acted upon by an external force.

• The force acting on an object is equal to the mass of that object times its acceleration.

• For every action, there is an equal and opposite reaction.

What is Newton's first law of motion also known as?

• The law of inertia.

• The law of acceleration.

• The law of action and reaction.

• The law of universal gravitation.

Which objects have inertia?

• All objects with mass.

• Only large objects like planets.

• Only moving objects.

• Only objects at rest.

What is the significance of the net force in motion?

• The net force determines the acceleration of an object.

• The net force is the total mass of an object.

• The net force is always equal to zero.

• The net force only affects stationary objects.

What is the effect of balanced forces on an object?

• They cause the object to accelerate.

• They change the object's direction.

• They do not change the object's motion.

• They increase the object's speed.

What is Newton's third law of motion?

• For every action, there is an equal and opposite reaction.

• Objects in motion stay in motion unless acted upon by an external force.

• The acceleration of an object is directly proportional to the net force acting on it.

• Energy cannot be created or destroyed, only transformed.

What is inertia?

• The tendency of an object to resist changes in its state of motion.

• The force that causes an object to accelerate.

• The speed of an object in a given direction.

• The mass of an object multiplied by its velocity.

How does a swimmer move forward when pushing water back?

• By applying Newton's third law of motion.

• By using a special swimming technique.

• By increasing their speed in the water.

• By holding their breath longer.

What is an unbalanced force?

• A force that causes a change in the motion of an object.

• A force that does not affect the motion of an object.

• A force that is equal in magnitude and opposite in direction to another force.

• A force that acts on an object at rest only.

What happens to objects in a moving vehicle when it suddenly stops?

• They continue moving forward due to inertia.

• They fall to the ground immediately.

• They remain stationary in the vehicle.

• They bounce back towards the rear of the vehicle.