Review 2

Review 2

9th Grade

•

59 Qs

quiz-placeholder

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Review 2

Review 2

Assessment

Quiz

•

Science

•

9th Grade

•

Practice Problem

•

Medium

•
NGSS
HS-PS2-1, HS-PS2-4, HS-PS3-2

+1

Standards-aligned

Created by

Juliet Dumepnas

Used 7+ times

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59 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for calculating velocity?

Distance × Time

Distance / Time

Distance + Time

Distance – Time

Answer explanation

Velocity is calculated using the formula Distance / Time. This means that to find the velocity, you divide the total distance traveled by the time taken to travel that distance.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a car travels 100 meters in 5 seconds, what is its velocity?

15 m/s

20 m/s

25 m/s

30 m/s

Answer explanation

To find velocity, use the formula: velocity = distance/time. Here, distance = 100 meters and time = 5 seconds. Thus, velocity = 100 m / 5 s = 20 m/s, which is the correct answer.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is acceleration?

The change in velocity over time

The change in distance over time

The force applied over time

The distance traveled in a straight line

Answer explanation

Acceleration is defined as the change in velocity over time. It measures how quickly an object's speed or direction changes, making it the correct choice among the options provided.

Tags

NGSS.HS-PS2-1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for calculating acceleration?

Final velocity – Initial velocity

Final velocity + Initial velocity

(Final velocity – Initial velocity) / Time

Final velocity × Initial velocity

Answer explanation

Acceleration is calculated using the formula (Final velocity – Initial velocity) / Time. This shows how much the velocity changes over a specific time period, making it the correct choice.

Tags

NGSS.HS-PS2-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a contact force?

Gravity

Magnetic force

Friction

Electrostatic force

Answer explanation

Friction is a contact force because it arises from the interaction between surfaces in contact. In contrast, gravity, magnetic force, and electrostatic force act at a distance without direct contact.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Balanced forces result in:

An object moving faster

An object staying at rest or moving at constant speed

An object accelerating

An object changing direction

Answer explanation

Balanced forces mean that the total force acting on an object is zero, resulting in no change in motion. Therefore, an object will either stay at rest or continue moving at a constant speed.

Tags

NGSS.HS-PS2-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Unbalanced forces result in:

No movement

A change in motion

Constant velocity

Equal forces acting in opposite directions

Answer explanation

Unbalanced forces cause a change in motion, as they result in acceleration or deceleration. This contrasts with balanced forces, which maintain constant velocity or no movement.

Tags

NGSS.HS-PS2-1

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