Question Detail

PHY 101 Kinematics in Two Dimensions Objective Question

Question

The instantaneous velocity vector of a particle in two-dimensional motion is always
Options
A directed vertically downward.
B tangent to the particle's path (trajectory).
Correct Answer
C directed radially outward from the origin.
D parallel to the position vector.
Correct Answer

Option B is the correct answer.

Detailed Explanation

At any point along its trajectory, the direction of a particle's instantaneous velocity is the direction in which it is moving at that instant. This direction is always tangent to the curved path or trajectory of the particle.

Hint

Think of the direction a projectile is moving at the very top of its arc, or the direction a car points as it goes around a curve.

Question Info