This question is from an assignment on Centripetal Force. The black dot in the i

Question

This question is from an assignment on Centripetal Force.

The black dot in the image below represents a particle moving about the drawn circle. The particle is rotating counterclockwise with a constant speed and a constant mass. Complete the sentences by circling the correct word:

The particle's horizontal speed is a) increasing/decreasing/contstant as the particle's horizontal acceleration is in the b) same/opposite/perpendicular direction as its horizontal velocity.

The particle's vertical speed is c) increasing/decreasing/constant as the particle's vertical acceleration is in the d) same/opposite/perpendicular direction as its vertical velocity.

The particle's speed is e) increasing/decreasing/constant as the particle's acceleration is in the f) same/opposite/perpendicular direction as its velocity.

Explanation / Answer

The particle's horizontal speed is a) constant as the particle's horizontal acceleration is in the

b) perpendicular direction as its horizontal velocity.

The particle's vertical speed is c) increasing as the particle's vertical acceleration is in the

d) same direction as its vertical velocity.

The particle's speed is e) constant as the particle's acceleration is in the

f) perpendicular direction as its velocity.

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