Physics 163

Unit 2: Newton's Laws of Motion

Problem Set A

Problem 15:

Evaluate the following statements and identify all that are true. Enter your answer in alphabetical order using small case letters with no spaces nor commas between the letters. (Example - "def")

a. More massive objects have more inertia than less massive objects.

b. If the forces acting upon an object are balanced, then it must be at rest.

c. Inertia is a force which acts upon objects at rest.

d. A 6.0-N net force would be required to keep a 3.0-kg object moving with a constant speed of 2.0 m/s.

e. The symbol g stands for the quantity known as gravity.

f. Fast-moving objects experience large net forces.

g. A feather and an elephant will have the same weight within a vacuum.

h. If you stand on a bathroom scale and bounce, the scale reading changes. This means that you weigh differently ( more or less) than if you were to standing at rest.

i. More massive objects have the same inertia as less massive objects; yet more massive objects willweigh more.

j. The acceleration of an object can be calculated by dividing the net force acting upon the object by the weight of the object.

k. The weight of an object can be expressed in units of kilograms or grams.

l. Weight and mass are the same thing; it's just that they have different values on different planets.

m. A massive object would be much easier to accelerate horizontally if placed in an environment in space where gravitational forces were less intense. (Assume negligible friction.)

n. You and your lab partner will experience a force of gravitational attraction when standing next to each other.

o. On Earth, the force of gravity acting upon an object is 9.8 times the weight of the object.

TIP:

Given the randomness of this question, there is currently no help available for it. Because the question is very conceptually-oriented, you would benefit from reviewing information about Newton's Laws of Motion as found in your textbook, your packet (curricular materials) or online.

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