Force and Motion Mid Quiz

A game of tug-of-war, in which two teams pull on opposite ends of a rope, is illustrated here. The center of the rope will move when which of the following is true?

• The ground provides no friction for either team

• One team has more people than the other

• The rope has essentially no mass of its own

• One team pulls with more force than the other

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If the distance an object travels and the time it takes to travel the distance are known, which of the following can be calculated?

• Average speed

• Average acceleration

• Instantaneous speed

• Instantaneous acceleration

Students are graphing data they recorded of a marble rolling across the floor in the classroom. Which of the following accurately describes a correct assignment of a label to the graph? (Which label would go on which axis?)

• "Distance in Centimeters" on the y-axis

• "Time in Inches" on the y-axis

• "Distance in Minutes" on the x-axis

• "Time in Meters" on the x-axis

Tags

NGSS.MS-PS3-1

If an object travels 42 meters in 6 seconds, what is its average speed?

• 6 m/s

• 7 m/s

• 42 m/s

• 252 m/s

Two horses pull in opposite directions, but together move in the direction shown. Which of the following best describes being applied in this situation?

• The forces are balanced, and the net force is zero.

• The forces are unbalanced, and the force of Horse 1 is greater.

• The forces are unbalanced, and the force of Horse 2 is greater.

• The forces are balanced, and force of Horse 1 is greater.

Tags

NGSS.MS-PS2-2

What is the average speed of a toy car that travels 240 cm in one minute? *60 seconds=1 minute

• 4 centimeters per second

• 15 centimeters per second

• 40 centimeters per second

• 240 centimeters per second

Which graph represents an object moving at the greatest speed?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

Which of the following is the correct formula for calculating speed?

• Speed = force/distance (force divided by distance)

• Speed=mass x acceleration (mass times acceleration)

• Speed=distance/time (distance divided by time)

• Speed=time x energy (time times energy)

Tags

NGSS.MS-PS3-1

An object that is at rest will begin to move if which of the following is true?

• The surface on which it rests is frictionless

• The mass of the object is sufficient

• Unbalanced forces act on the object

• Gravity on the object can be reduced

Tags

NGSS.MS-PS2-2

The forces acting on a box are illustrated below. The result of these forces will be that the box will -

• move to the right at a constant speed.

• accelerate to the right.

• move to the left at a constant speed.

• accelerate to the left.

Tags

NGSS.MS-PS2-2