Question detail
A car accelerates from a speed of 10 m/s to a speed of 30 m/s over a distance of 100 m. Calculate the acceleration of the car Explain your answer using Uniform acceleration (HT only) and acceleration.
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 motion
Question
A car accelerates from a speed of 10 m/s to a speed of 30 m/s over a distance of 100 m. Calculate the acceleration of the car Explain your answer using Uniform acceleration (HT only) and acceleration.
Answer
The acceleration of the car is 3 m/s².
Explanation
A strong answer should address (HT only) Use v^2 - u^2 = 2as to calculate acceleration when velocities and distance are known directly. Use the context of Uniform acceleration (HT only) within Forces and motion, then state the relevant forces or motion reasoning with units where needed. The answer is correct when it names the key physics quantity, keeps distance and displacement distinct, and links the conclusion back to the approved learning objective.
Common mistake
Common Mistake in Calculating Acceleration
Students often confuse the variables in the equation v^2 - u^2 = 2as, leading to incorrect calculations of acceleration.
Ensure to clearly identify final velocity (v), initial velocity (u), and distance (s) before substituting into the equation.
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