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#initial velocity

7 public questions tagged with this topic.

Acceleration and Velocity Analysis

In motion with constant acceleration in a plane, what happens if the acceleration is opposite to the initial velocity?

If the acceleration is opposite to the initial velocity, the object slows down, reverses direction, and then accelerates in the direction of the acceleration along a straight line. The path remains linear but with a change in direction. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives The object slows, reverses, and accelerates as the result, so option D is correct.

Ref: NCERT Class 11 Physics > Chapter 3: Motion in a Straight Line > Topic: Acceleration and Velocity Analysis - Part 8

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Straight Line Motion - Mixed Concepts

For an object in motion with constant acceleration in a plane, what is true when the acceleration is parallel to the ini

When the constant acceleration is parallel to the initial velocity, the motion occurs in a straight line along the direction of the initial velocity, as the acceleration only changes the magnitude of the velocity, not its direction. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives The path is a straight line as the result, so option A is correct.

Ref: NCERT Class 11 Physics > Chapter 3: Motion in a Straight Line > Topic: Straight Line Motion - Mixed Concepts

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