When is a particle speeding up?
Understand the Problem
The question is about the conditions under which a particle is considered to be speeding up. It implies a need to understand the relationship between a particle's velocity and acceleration.
Answer
When the velocity and the acceleration have the same signs
The final answer is when the velocity and the acceleration have the same signs.
Answer for screen readers
The final answer is when the velocity and the acceleration have the same signs.
More Information
A particle speeds up when its velocity and acceleration vectors are in the same direction (both positive or both negative). This occurs because the acceleration reinforces the velocity, increasing the speed.
Tips
Students often confuse speed with velocity. Remember that speed is the magnitude of velocity and always positive. Ensure velocity and acceleration vectors are compared correctly.
Sources
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