Question

Statement I:For motion in two or three dimensions, velocity and acceleration vectors must have any angle between $0^{\circ }$ and $90^{\circ }$ between them.
Statement II:For motion in three dimensions velocity and acceleration of an object is always in the opposite direction.

• A. If both statement I and statement II are true and statement II is the correct explanation of statement I.
• B. If both statement I and statement II are true but statement II is not the correct explanation of statement I.
• C. If statement I is true but statement II is false.
• D. If both statement I and statement II are false.

Answer 1

Answer: (D)

In one dimension, the velocity and the acceleration of an object are always along the same straight line either in the same direction or in the opposite direction. However, for motion in two or three dimensions velocity and acceleration vectors may have any angle between $0°$ and $180°$ between them.