Figure 7.4 
The figure shows an object attached to a string, making a pendulum.
-A ball of mass 5 kg is attached to a string of length 2 m, as shown in Fig. 7.4. If we release the ball at an angle of 85°, and let it hit a stationary ball of mass 10 kg at the bottom of its trajectory, what is the speed of each ball after the collision? Assume the collision is elastic.
Definitions:
Piaget's Cognitive Stages
A rephrased definition for Piaget's Theory, highlighting the sequential developmental stages identified by Piaget as children's thinking evolves.
Understand Emotions
The ability to accurately perceive, interpret, and respond to one's own and others' emotional states.
Levels of Aggressiveness
The varying degrees to which an individual may exhibit aggressive behavior, influenced by factors such as environment and genetics.
Unrealistically Positive
An overly optimistic perspective or assessment that may not accurately reflect reality or take into account potential negative outcomes.
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