Question detail
Explain why an object can move at constant velocity when the resultant force acting on it is zero.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Forces and their interactions
Question
Explain why an object can move at constant velocity when the resultant force acting on it is zero.
Answer
An object can move at constant velocity when the resultant force is zero because the forces acting on it are balanced. This means that the forward forces are equal to the backward forces, resulting in no change in motion.
Explanation
This question assesses understanding of the concept of balanced forces and their effect on motion. A strong answer demonstrates comprehension of Newton's first law of motion, which states that an object will remain at rest or in uniform motion unless acted upon by a net external force.
Common mistake
Vector Addition Mistake
Students often add forces as if they are scalar quantities, ignoring their directions.
Always consider the direction of each force when combining them; use vector diagrams to visualize the addition.
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