CHMS - 6th Grade UNIT 5 Review Force & Motion

A set of forces that cancel one another out is called a:

• balanced force

• unbalanced force

Answer explanation

A set of forces that cancel each other out results in no net force acting on an object, which is defined as a balanced force. This means the forces are equal in magnitude and opposite in direction.

Tags

NGSS.3-PS2-1

A set of forces acting on an object that do NOT cancel one another out is called a:

• balanced force

• unbalanced force

Answer explanation

A set of forces that do not cancel each other out is known as an unbalanced force. This results in a change in the object's motion, unlike balanced forces, which keep the object at rest or in constant motion.

Tags

NGSS.MS-PS2-2

A combination of all the forces acting on an object:

• balanced force

• unbalanced force

• net force

Answer explanation

The net force is the combination of all forces acting on an object. It determines the object's motion. Balanced forces result in no change, while unbalanced forces cause acceleration. Thus, the correct answer is net force.

Tags

NGSS.MS-PS2-2

When the forces acting on an object are going in the OPPOSITE direction what do you do?

• ADD

• SUBTRACT

Answer explanation

When forces act in opposite directions, you subtract their magnitudes to find the net force. Therefore, the correct action is to SUBTRACT.

Tags

NGSS.MS-PS2-2

When the forces acting on an object are going in the OPPOSITE direction what do you do?

• ADD

• SUBTRACT

Answer explanation

When forces act in opposite directions, you subtract their magnitudes to find the net force. Therefore, the correct action is to SUBTRACT.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When the forces that are acting on an object are going in the SAME direction what do you do?

• ADD

• SUBTRACT

Answer explanation

When forces act in the same direction, their effects combine. Therefore, you add their magnitudes to find the total force acting on the object. Thus, the correct choice is ADD.

Tags

NGSS.MS-PS2-2

A push or pull exerted on an object in order to change the motion.

• force

• speed

• inertia

• centripetal acceleration

Answer explanation

A force is defined as a push or pull that can change an object's motion. The other options, such as speed and inertia, do not describe this action, making 'force' the correct answer.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The combination of all the forces acting on an object...

• net force

• balanced force

• unbalanced force

Answer explanation

The net force is the total combination of all forces acting on an object. It determines the object's motion. Balanced forces result in no net force, while unbalanced forces lead to a change in motion.

Tags

NGSS.MS-PS2-2

What is the net force acting on this object?

• 0 Newtons

• 10 Newtons

• 5 Newtons

Answer explanation

The net force is 0 Newtons because the forces acting on the object are balanced, resulting in no acceleration. Therefore, the correct answer is 0 Newtons.

Tags

NGSS.MS-PS2-2

What is the net force acting on this object?

• 400 Newtons

• 800 Newtons

• 0 Newtons

Answer explanation

The net force is the vector sum of all forces acting on an object. If the object experiences a force of 400 Newtons in one direction and no opposing forces, the net force is 400 Newtons, making this the correct answer.

Tags

NGSS.MS-PS2-2