Dynamics Review

What is the formula to calculate net force?

• Net Force = F1 / F2 / F3 / ...

• Net Force = ΣF = F1 + F2 + F3 + ...

• Net Force = F1 x F2 x F3 x ...

• Net Force = F1 - F2 - F3 - ...

Tags

NGSS.HS-PS2-1

When forces are balanced, what is the overall effect on an object's motion?

• The object will maintain its current state of motion.

• The object will stop moving

• The object will accelerate indefinitely

• The object will change direction

Tags

NGSS.HS-PS2-1

If a 10 N force is applied to the right and a 5 N force is applied to the left, what is the net force?

• 15 N

• 3 N

• 8 N

• 5 N

Tags

NGSS.HS-PS2-1

How can you determine the direction of the net force when multiple forces are acting on an object?

• Divide the forces by the number of objects

• Choose the force with the highest magnitude

• Calculate the vector sum of all individual forces to determine the direction of the net force.

• Ignore all forces except the largest one

Tags

NGSS.HS-PS2-1

What is the net force on an object if two forces of 8 N and 3 N are acting in the same direction?

• 11 N

• 10 N

• 2 N

• 5 N

Tags

NGSS.HS-PS2-1

Explain the concept of frictional force and its effect on motion.

• Frictional force slows down or stops the motion of an object by creating resistance between the object and the surface it is moving on.

• Frictional force causes objects to float

• Frictional force has no effect on motion

• Frictional force increases the speed of an object

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

If an object is moving to the right with a force of 15 N and friction is acting to the left with a force of 5 N, what is the net force?

• 5 N

• 12 N

• 10 N

• 20 N

Tags

NGSS.HS-PS2-1

What type of force is required to overcome frictional force?

• Applied force

• Magnetic force

• Gravitational force

• Frictional force

Explain the difference between balanced and unbalanced forces in relation to an object's motion.

• Balanced forces always result in the object moving in the direction of the greater force

• Unbalanced forces cancel each other out, resulting in no motion of the object

• Balanced forces lead to a net force causing the object to move in the direction of the greater force

• Balanced forces cancel each other out, resulting in no net force acting on the object, whereas unbalanced forces lead to a net force causing the object to move in the direction of the greater force.

Tags

NGSS.HS-PS2-1

Explain the concept of inertia and its relationship to an object's motion.

• Inertia is the resistance of an object to change its state of motion, and it is directly proportional to the object's mass.

• Inertia is the force that causes objects to move, and it is inversely proportional to the object's mass.

• Inertia has no effect on an object's motion.

• Inertia increases the speed of an object.

Tags

NGSS.MS-PS2-2