Question

Which of the following is true of an object when it moves uniformly around a circle?
(options they give me)
1. it verocity changes, but the acceleration remains the same
2. the speed changes but the verocity and acceleration remains the same
3. it's speed, verocity, and acceleration all remains the same
4. it's verocity changes but the speed remains the same
Can someone help me? I'm really confused. . .

Answer 1

Answer:

4. it's velocity changes but the speed remains the same

Explanation:

• speed - scalar quantity ( only magnitude)

• velocity - vector quantity (both direction and magnitude)

• acceleration - vector quantity (both direction and magnitude)

When an object when it moves uniformly around a circle the speed remains the same since it is in uniform motion.

velocity is a vector quantity, it is continuously changing because the the direction of motion is continuously changing.

Acceleration in uniform motion is directed towards center and hence direction of acceleration is always changing. Hence, acceleration is also changing.

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Answer 2

Answer:

This correct option is 4