Physics Force & Motion SZABMU 2023
PMDC Verified Question 30 of 137
The car is speeding up along negative y axis then acceleration will be along:
A
Positive x axis
B
Negative x axis
C
Positive y axis
D
Negative y axis
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Negative y axis
Concept:

When an object is speeding up, its velocity vector and its acceleration vector must point in the exact same direction.

Solution:

  • The car is moving along the negative y-axis. This means its velocity points strictly toward the negative y direction.


  • Because it is "speeding up", the force causing it to accelerate must be pushing it in the same direction it is already going.


  • Therefore, the acceleration vector is parallel to the velocity vector, pointing along the negative y-axis.


Why other options are incorrect:

If acceleration pointed to the Positive y-axis, the car would be slowing down (braking). X-axis acceleration would cause it to curve.

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