6.5 Circular Motion & Acceleration

Front

What happens to an object in circular motion if the string is suddenly cut?

Back

The object moves in a straight line.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration that points towards the center of the circle, keeping the object in circular motion.

Front

Where does centripetal acceleration always point?

Back

Towards the center of the circle.

Front

What is the relationship between velocity and circular motion?

Back

The velocity of an object in circular motion is always tangent to the circle.

Front

What does it mean for an object to be in uniform circular motion?

Back

An object is in uniform circular motion if it moves in a circle at a constant speed.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v^2 / r, where v is the linear speed and r is the radius of the circle.

Front

What is the difference between speed and velocity in circular motion?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes direction.

Front

What is the effect of increasing the radius of a circular path on centripetal acceleration?

Back

Increasing the radius decreases the centripetal acceleration for a constant speed.

Front

What happens to the speed of an object in circular motion if the radius is decreased?

Back

If the radius is decreased while maintaining the same centripetal force, the speed must increase.

Front

What is the direction of the net force acting on an object in circular motion?

Back

The net force acts towards the center of the circle.