4 - Newton's Laws | Forces Practice Flashcard

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

What is the definition of net force?

Back

Net force is the vector sum of all the forces acting on an object.

Front

True or False: A constant velocity means that an object is not accelerating.

Back

True.

Front

What happens to an object when the net force acting on it is zero?

Back

The object will either remain at rest or continue to move at a constant velocity.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration.

Front

What is the relationship between weight and mass?

Back

Weight is the force exerted by gravity on an object, calculated as the product of mass and the acceleration due to gravity (W = mg).

Front

What does it mean for forces to be balanced?

Back

Balanced forces occur when the total net force acting on an object is zero, resulting in no change in motion.

Front

What is the effect of air resistance on a falling object?

Back

Air resistance opposes the motion of a falling object and can affect its acceleration and terminal velocity.

Front

What is the acceleration of an object at terminal velocity?

Back

The acceleration of an object at terminal velocity is zero.

Front

How does increasing air resistance affect a skydiver's fall?

Back

Increasing air resistance reduces the net force acting on the skydiver, eventually leading to terminal velocity.