Introduction to Forces

Question 1

Which best explains parallel forces?

Revolt · Accepted Answer

left and right forces that can be added together

Question 2

Which force best represents Fg?

Revolt · Accepted Answer

The weight of a barbell acting on a weight lifter is 80 N.

Question 3

Which best describes two counteracting forces on an object?

Revolt · Accepted Answer

two children pulling apart a wishbone

Question 4

If forces acting on an object are unbalanced, the object could experience a change in ________.

Revolt · Accepted Answer

speed, direction, or both

Question 5

Which is the best example of forces acting in the same direction?

Revolt · Accepted Answer

two football players pushing a tackling sled

Question 6

Diego is trying to lift a piano to the second floor of his house. Diego uses a pulley system and gives a big lift to the piano.The piano moves upward, then stops, and then it starts to fall to the ground. (The direction of the force of gravity is negative.)

Revolt · Accepted Answer

positive force → balanced force → negative force

Question 7

An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force?

Revolt · Accepted Answer

The net force is zero.

Question 8

Polly is pushing a box to the right across the floor with a force of 30 N. The force of gravity is 8 N, and the normal force is 8 N. Which value could describe the force of friction if Polly could not move the box?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/evresources/d4d62b26e4c825591c75fb0efdafc8f5.png

Question 9

Jill is pushing a box across the floor. Which represents the upward force perpendicular to the floor?

Revolt · Accepted Answer

FN

Question 10

Which units are used to measure force?

Revolt · Accepted Answer

newtons

Introduction to Forces Answers

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