Question

1. weight

a. when all forces on an object are balanced.

1. equilibrium

b. the force of gravity on an object.

1. mass

c. the acceleration of gravity.

1. heat

d. the a product of friction.

1. g

e. the measure of the matter in an object.

Explanation:

• Weight: Weight is defined as the force of gravity acting on an object. The formula for weight is \(W = mg\) (where \(m\) is mass and \(g\) is the acceleration due to gravity). So, weight corresponds to option B.
• Equilibrium: In physics, equilibrium occurs when all the forces acting on an object are balanced. There is no net force, and the object either remains at rest or moves with a constant velocity. So, equilibrium corresponds to option A.
• Mass: Mass is a measure of the amount of matter in an object. It is an intrinsic property of the object and does not change with location (unlike weight). So, mass corresponds to option E.
• Heat: Heat can be generated as a product of friction. When two surfaces rub against each other, the mechanical energy is converted into thermal energy (heat). So, heat corresponds to option D.
• g: In physics, \(g\) represents the acceleration of gravity. Near the surface of the Earth, \(g\approx9.8\ m/s^{2}\). So, \(g\) corresponds to option C.

Answer:

1. B. The force of gravity on an object.
2. A. When all forces on an object are balanced.
3. E. The measure of the matter in an object.
4. D. The a product of friction.
5. C. The acceleration of gravity.