Balanced and Unbalanced Forces

Henry, Priya, and Avery are discussing physics. They are trying to identify an example of balanced forces. Which scenario that they discuss is an example of balanced forces?

• Henry's car accelerating down the street

• Priya's book resting on her table

• Avery skydiving and falling at terminal velocity

• A rocket that Henry saw launching into space

Isla and Ethan are playing with a toy car. Lily gives a push to the car. What happens when the force Lily applies on the car is unbalanced?

• The car remains stationary

• The car's motion does not change

• The car accelerates

• The car disappears

Tags

NGSS.MS-PS2-2

Which of the following scenarios represents unbalanced forces in a real-world situation?

• Samuel and James are having a tug of war with equal strength

• A basketball hanging from a string in Charlotte's backyard, at rest

• James is pushing a heavy box in the garage and it starts moving

• A vase sitting still on a shelf in Samuel's house

Tags

NGSS.MS-PS2-2

Daniel and Priya are playing tug of war with Aiden. If the rope doesn't move in any direction, what is the net force on the rope?

• Equal to the weight of the rope

• Zero

• Constant but not zero

• Increasing over time

Tags

NGSS.MS-PS2-2

Mason, Arjun, and Grace are playing with a toy car. What will happen if they apply unbalanced forces on the toy car?

• The toy car will rotate

• The toy car will not move

• The toy car will change its state of motion

• The toy car will remain at a constant velocity

Tags

NGSS.MS-PS2-2

Mia and David are playing tug of war. If they pull the rope with equal force but in opposite directions, what can we say about the motion of the rope?

• The rope will move towards Mia

• The rope will move towards David

• The rope will not move

• The rope will move in a random direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Michael, Kai, and Daniel were discussing physics. They were trying to identify scenarios that do NOT represent unbalanced forces. Which of the following scenarios they discussed does NOT represent unbalanced forces?

• Michael's car coming to a stop

• A leaf falling to the ground in Kai's backyard

• Daniel's book lying on his desk

• A soccer ball being kicked by Michael

Tags

NGSS.MS-PS2-2

Priya and David are playing a game of tug of war. They are pulling with equal force on opposite ends of the rope. What effect does this balanced force have on the velocity of the rope?

• They increase the velocity of the rope

• They decrease the velocity of the rope

• They change the direction of the rope's velocity

• They have no effect on the velocity of the rope

Tags

NGSS.MS-PS2-2

Arjun, Ava, and Priya are observing a car traveling at a constant speed on a straight road during their physics class. Based on this observation, what can they infer about the forces acting on the car?

• The forces are unbalanced, and the car is accelerating

• The forces are balanced, and the car is not accelerating

• The forces are unbalanced, and the car is decelerating

• The forces are balanced, but the car is accelerating

Tags

NGSS.MS-PS2-2

Aria was observing a box sliding across the floor in her house. It eventually came to a stop. What can we say about the forces acting on the box while it was sliding and when it stopped?

• The forces were balanced while it was sliding

• The forces became balanced when it stopped

• The forces were unbalanced, causing it to stop

• The forces remained unbalanced even after it stopped

Tags

NGSS.MS-PS2-2