Forces and Motion Concepts

Forces and Motion Concepts

Assessment

Interactive Video

Physics, Science

10th - 12th Grade

Practice Problem

Hard

Created by

Liam Anderson

FREE Resource

Mr. Andersen explains the concept of vector sum of forces in this AP Physics video. He begins with a demonstration using a 1.0 kg mass and force meters to illustrate how forces split and combine. The video covers vector forces at different angles, the use of free-body diagrams, and the calculation of vector sums to determine acceleration using Newton's second law. It also includes practical applications using force tables and simulations to visualize and solve physics problems involving forces and friction.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the force exerted by each force meter when a 1.0 kg mass is split vertically?

9.8 newtons

5 newtons

7.1 newtons

10 newtons

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When two force meters are separated by a 90-degree angle, what is the approximate force reading on each?

5 newtons

7.1 newtons

9.8 newtons

10 newtons

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a free-body diagram in physics?

To measure the weight of an object

To calculate the speed of an object

To identify and represent all force vectors acting on an object

To determine the color of an object

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a force table used for in physics experiments?

To determine the mass of an object

To calculate time

To balance and measure vector sums of forces

To measure temperature

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you determine the vector sum of forces using a force table?

By determining the color

By calculating the speed

By aligning forces tail to tip and balancing them

By measuring the temperature

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the acceleration of an object when the vector sum of forces is zero?

The object accelerates

The object decelerates

The object remains at constant velocity

The object changes direction

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a simulation, if a robot applies a force to the right and friction equals this force, what is the net force?

Positive

Negative

Zero

Equal to the applied force

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