Force, Motion, and Energy Review

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object in such a way that they cancel each other out, resulting in no change in the object's motion.

Front

What two forces are commonly acting on objects in motion?

Back

Friction and Gravity.

Front

What force causes objects to fall to the ground?

Back

Gravity.

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 at a constant velocity unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the role of friction in motion?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction to the movement.

Front

How does gravity affect objects on Earth?

Back

Gravity pulls objects toward the center of the Earth, giving them weight and causing them to fall when unsupported.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What happens to a person in a car when it suddenly stops?

Back

The person continues to move forward due to inertia, which is why they are pushed into their seat belt.

Front

What is the relationship between mass and weight?

Back

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