Equations of Motion: Practice Problem & Solution
Assertion (A): If initial velocity is negative and acceleration is positive then motion is retarded (initially). Reason (R): If initial velocity is negative but acceleration is positive then displacement of a particle can never be positive.
Solution Explained:
To solve this problem, we apply the core principles of Equations of Motion. Understanding the underlying formula is key to arriving at the correct answer below:
When velocity and acceleration have opposite signs, the speed decreases (retardation). After stopping, the positive acceleration will move the particle in the positive direction, which can result in positive displacement, so R is false.
Leave a Reply