Resultant Vectors and Forces

Resultant Vectors and Forces

Assessment

Interactive Video

Physics, Mathematics, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains how to solve a vector problem involving two forces acting on a box. One force pulls upward with 50 Newtons, and the other pulls eastward with 100 Newtons. The tutorial guides viewers through drawing the vectors, connecting them head to tail, and using the Pythagorean theorem to find the resultant force's magnitude. It also covers calculating the angle of the resultant vector using the inverse tangent function. The solution is summarized with the magnitude and direction of the resultant force.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the magnitudes of the forces acting on the box?

50 Newtons upward and 100 Newtons east

100 Newtons upward and 50 Newtons east

50 Newtons east and 100 Newtons upward

100 Newtons east and 50 Newtons downward

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of drawing a free body diagram in this context?

To calculate the weight of the box

To find the speed of the box

To visually represent the forces and their directions

To determine the mass of the box

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you connect vectors to find the resultant force?

Head to head

Head to tail

Tail to tail

Tail to head

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which theorem is used to calculate the magnitude of the resultant vector?

Newton's First Law

Pythagorean Theorem

Law of Sines

Law of Cosines

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the Pythagorean theorem used in this problem?

a^2 + b = c^2

a^2 - b^2 = c^2

a^2 + b^2 = c

a^2 + b^2 = c^2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the magnitude of the resultant vector calculated in this problem?

150 Newtons

111.80 Newtons

50 Newtons

100 Newtons

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which trigonometric function is used to find the direction of the resultant vector?

Sine

Cosine

Inverse Tangent

Tangent

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