EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Because its ____ is always changing, an object moving in a circular path experiences a continuous change in velocity.
A
gravity
B
vector
C
direction
D
frame of reference
Explanation: 

Detailed explanation-1: -When an object moves in a circular path it changes into direction and velocity at every point. The force that causes this velocity or acceleration is called centripetal force.

Detailed explanation-2: -In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant.

Detailed explanation-3: -In uniform circular motion, direction of velocity goes on changing continuously, however the magnitude of velocity is constant.

Detailed explanation-4: -An object moving in a circle is accelerating. Accelerating objects are objects which are changing their velocity-either the speed (i.e., magnitude of the velocity vector) or the direction.

Detailed explanation-5: -To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.

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