



 
Hi Julie, If you want the angular speed in degrees per second then you divide the number of degrees of rotation by the time it took in seconds. That's what you did for the merrygoround that rotated once (360 degrees) in 5 seconds to get 360/5 = 72 degrees per second. When the merrygoround increased its speed to 16 rotations every 5 seconds that's 16 × 360 = 5760 degrees every 5 seconds or 5760/5 = 1152 degrees per second. Penny  


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