Introduction to Forces

Question 1

Select the statements that describe a vector. Check all that apply.Vectors have a size only.Vectors have a size and a direction.Vectors are indicated with arrows.Vectors can have only positive values.Vectors can have positive or negative values.

Revolt · Accepted Answer

Vectors have a size and a direction.; Vectors are indicated with arrows.; Vectors can have positive or negative values.

Question 2

This means that the elevator will .

Revolt · Accepted Answer

move down

Question 3

What is the net force acting on the buggy?

Revolt · Accepted Answer

✔ 390; N: 390; The net force is pointing to the .: right

Question 4

X left✔ right

Revolt · Accepted Answer

✔ right

Question 5

Use the force diagram on the elevator to complete the statements.

Revolt · Accepted Answer

The forces acting on the elevator are .: unbalanced; Fg is Fp.: greater than; This means that the elevator will .: move down

Question 6

Identify the situations that have an unbalanced force. Check all that apply.A baseball speeds up as it falls through the air.A soccer ball is at rest on the ground.An ice skater glides in a straight line at a constant speed.A bumper car hit by another car moves off at an angle.A balloon flies across the room when the air is released.

Revolt · Accepted Answer

A baseball speeds up as it falls through the air.; A bumper car hit by another car moves off at an angle.; A balloon flies across the room when the air is released.

Question 7

Fg is Fp.

Revolt · Accepted Answer

greater than

Question 8

Use the force diagram on the elevator to complete the statements.

Revolt · Accepted Answer

✔ unbalanced; The forces acting on the elevator are .: unbalanced; Fg is Fp.: greater than; This means that the elevator will .: move down

Introduction to Forces Answers

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