What type of motion is the ball making?, Straight line motion, Circular motion, Random motion, Triangular motion, In which direction does the force that keeps the ball moving in a circle act?, Away from the centre, Along the direction of motion, Towards the centre of the circle, Upwards, The ball is moving at a constant speed around the circle. Is its velocity changing?, No, because its speed is constant, No, because there is no force, Yes, because its direction is continuously changing, Yes, because its mass is changing, Why is the ball accelerating even if its speed is constant?, Its mass is increasing, Its direction is continuously changing, Its speed is continuously increasing, The string is getting longer, If the ball's velocity is changing, what does this tell us about the ball?, It is accelerating, It is stopping, It has constant velocity, It has no force acting on it, The force acting towards the centre of the circle is called the:, Frictional force, Gravitational force, Centripetal force, Upthrust force, Imagine that the string suddenly breaks. What will happen to the ball?, It will move directly away from the centre, It will continue moving in a circle, It will move in a straight line along a tangent, It will immediately stop, The teacher spins the ball faster while keeping its mass and radius the same. What happens to the required resultant force?, It becomes smaller, It stays the same, It becomes bigger, It becomes zero, Two balls have the same mass and speed. Ball A moves in a smaller circle than Ball B. Which ball needs a bigger force?, Ball A, Ball B, Both need the same force, Neither needs a force, Which statement best explains why the ball moves in a circular path?, The ball is moving at a constant speed, so its velocity never changes., A force acts away from the centre and pushes the ball around., A force acts towards the centre and continuously changes the ball's direction, The ball has no acceleration because its speed is constant.
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Centripetal Force
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