Question

the blue ball is moving with uniform circular motion in the direction shown by the curved arrow in the diagram below.
in the tables below the diagram, which combination of arrows shows the correct direction of velocity and of acceleration for the ball when the ball is at the location shown in the diagram?
select one answer
a
velocity
acceleration
←
↑
b
velocity
acceleration
←
←
c
no answer saved.

Explanation:

Step1: Recall Uniform Circular Motion Rules

In uniform circular motion, velocity is tangent to the circle at the object's position. Acceleration (centripetal) points toward the center of the circle.

Step2: Analyze Velocity Direction

The ball is at the bottom of the circle, moving counterclockwise (from the curved arrow). The tangent at the bottom (moving counterclockwise) is to the left (←), so velocity direction is left.

Step3: Analyze Acceleration Direction

Centripetal acceleration points toward the center. The center of the circle is above the ball's current position, so acceleration direction is up (↑).

Step4: Match with Options

Option A has velocity ← and acceleration ↑, which matches our analysis.

Answer:

A. Velocity ←, Acceleration ↑