Topic 2 Test Review

When a car suddenly stops, the objects in the back seat are thrown forward. This is explained by:

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

Javion is trying to determine the speed of a marble that went down a ramp. He measures the ramp's distance to be 9 meters and records the time it took the marble to travel the length of the ramp as 27seconds. How should the numbers be placed into the equation and what is the speed of the marble?

• 0.3

• 3

• 7

• 0.7

Tags

NGSS.MS-PS3-1

The difference between speed and velocity is that velocity is speed combined with ________.

Three students were asked to come up with examples of velocity, and their results are displayed in the table below. Which student created accurate examples of velocity?

• Student 1

• Student 2

• Student 3

• All students created accurate examples of velocity

According to Newton’s First Law:

• when you kick a soccer ball, the ball pushes back against your foot.

• when you lean back against a wall, the wall pushes back against your back.

• when you push a box that is still, it moves forward.

• when you hit a puching bag, the negative velocity can injure you

Which of the following best illustrates an application of Newton’s First Law (also called the Law of Inertia)?

• A passenger not wearing a seatbelt is ejected from an automobile during a severe crash.

• Dinner plates remain on a table when a slick tablecloth is pulled out from underneath them.

• An ice hockey puck continues sliding across the relatively frictionless ice until it comes into contact with a wall or a player’s stick.

• All of these are examples of Newton's First Law.

What was the ball's average speed during the time represented in the graph? Speed = Distance / Time

• 0.2 m/s

• 60 m/s

• 5 m/s

• 10 m/s

Tags

NGSS.MS-PS3-1

Which of the following statements is correct regarding the speed of an object?

• An object’s speed is determined by the distance the object traveled and how long it took the object to travel that distance.

• An object’s speed is determined by the distance the object traveled and it's final displacement.

• An object’s speed is determined by the distance the object traveled, how long it took the object to travel that distance and what direction the object traveled.

• All of these

Tags

NGSS.MS-PS3-1

Distance is the ______ path travelled by an object. Where as displacement is the

______ distance in a straight line between the final position and initial position of the motion of the object.

• total; shortest

• shortest; total

• longest; average

• average; longest

Which of the following statements are true about the speed of an object that traveled for one hour?

• An object that travels a lesser distance will have a greater speed.

• An object that travels a greater distance will have a greater speed.

• Calculating the speed would require someone to divide the one hour time by the distance.

• The distance traveled by the object does not play a role in determining the speed of an object.