Question detail

Forces and their interactions scenario: two trolleys collide and momentum is compared before and after. Which answer best addresses Resultant forces and the objective to state that balanced forces have a resultant force of zero?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Forces and their interactions

Question

A. In the collision scenario, apply balanced forces to state that balanced forces have a resultant force of zero while keeping resultant force versus balanced forces separate.
B. In the collision scenario, mix up resultant force versus balanced forces and ignore balanced forces.
C. Use a general revision statement without applying Resultant forces to the situation.
D. Choose a different forces topic instead of explaining state that balanced forces have a resultant force of zero.

Answer

The correct answer is: In the collision scenario, apply balanced forces to state that balanced forces have a resultant force of zero while keeping resultant force versus balanced forces separate.

Explanation

The correct option is In the collision scenario, apply balanced forces to state that balanced forces have a resultant force of zero while keeping resultant force versus balanced forces separate.. It is correct because the scenario says two trolleys collide and momentum is compared before and after, which must be interpreted through Resultant forces. This directly supports the learning objective to state that balanced forces have a resultant force of zero. Use values 6, 14, and 11 only if the question asks for a calculation. The answer earns credit by naming the relevant force or motion quantity, using units when needed, and avoiding the boundary error resultant force versus balanced forces.

Common mistake

Confusing Balanced Forces

Students often think that balanced forces mean no forces are acting on an object.

Explain that balanced forces mean the forces acting on an object are equal in size and opposite in direction, resulting in a net force of zero.

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