Question

The direction of motion of a body is decided by ___________ of the body.

• A. Velocity
• B. Acceleration
• C. Displacement
• D. Speed

Answer 1

Answer: (A), (B)

The correct options are
A Velocity
B Acceleration

Velocity is a vector quantity which given direction and magnitude of of speed at which body is moving.

Speed is magnitude part of velocity. So nothing to be done with direction.

Displacement is position of the body where particle can move in any direction. So cannot say in which direction particle is moving.

Acceleration is also a vector quantity, velocity of particle increases in direction of acceleration. Also if acceleration is perpemdicular to the the velocity then particle will rotate in circle so it also contribute to the direction of motion.

So option A and B are best possible.