Science

A girl pushes on the classroom door to open it. Which two terms accurately describe the net force acting on the door?

• Contact&Unbalanced

• Contact&Balanced

• Noncontact&Balanced

• Noncontact&Unbalanced

Tags

NGSS.HS-PS2-1

A dog is pulling on a leash while walking down the sidewalk . What frame of reference would indicate that the dog is not moving?

• The Leash

• A Nearby Building

• A Tree

• The Sidewalk

Two dogs pull on a rope. One dog pulls with a force of 5N to the left, and the other dog pulls with a force of 3N to the right. What is the result?

• The Rope Moves To The Left.

• The Rope Remains In Place.

• The Rope Move To The Right.

• The Rope Has A Balanced Force Applied To It.

• The Rope Has A Unbalanced Force Applied To It.

Tags

NGSS.MS-PS2-2

A bus driver drove from Philadelphia to Washington, D.C. He drove the first 100km in 2 hours, the next 55km in 1 hour, and the final 75km in 2 hours. What is the average speed of the bus throughout the trip?

• 46km/h

• 50km/h

• 77km/h

• 81km/h

Which statement about acceleration is always true?

• Either a change in speed or a change in direction causes acceleration

• The Unit m/s Is The SI Unit Of Acceleration.

• For Objects To Acceleration, They Must Speed Up

• Both Speed And Direction Must Change For Acceleration To Occur.

A cross-country runner runs 4km in 15 minutes. What can you calculate using this information?

• Speed

• Force

• Velocity

• Acceleration

Tags

NGSS.MS-PS3-1

You can find the speed on a distance versus time graph by finding the _______ of the line?

• Slope

• Acceleration

• Gravity

• Velocity

• What!?!?!?!?

Tags

NGSS.MS-PS3-1

You can find the speed on a distance versus time graph by finding the _______ of the line?

slope

A woman is taking a walk, moving at a rate of 80m/min. What additional information would you need to determine her velocity?

• You would need to know the direction in which the one woman is walking

• You would need to know the speed the woman is walking.

• You would need how far the woman is walking.

Tags

NGSS.MS-PS3-1