# Acceleration & Velocity

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1. Balls A, B, and C all start at the same height above the ground. Ball A is dropped. Ball B is thrown horizonatally to the right at 5 m/s. Ball C is thrown horizontally to the left at 15 m/s. What is the order that they hit ground and why?

2. Explain why, when traveling in a circle, the acceleration is toward the center of the circle.

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#### Solution Preview

The acceleration due to gravity g = 9.8 m/s^2. Therefore, a = g = 9.8 m/s^2. When we substitute the value of a in the

formula (1/2)at^2, we get 1/2 * 9.8 = ...

#### Solution Summary

The expert explains why when travelling in a circle, the acceleration towards the center of the circle is determined. A complete, neat and step-by-step solutions are provided.

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