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FinishIf you drop a ball out of a window, it falls towards the ground with the acceleration of 10 m/s". How long will it takethe ball to reach 100 m/s? (assume the ball starts from rest)

Sagot :

Given data

*The given acceleration is a = 10 m/s^2

*The initial speed of the ball is u = 0 m/s

*The final speed of the ball is v = 100 m/s

The expression for the time taken by the ball to reach the ground is given by the kinematic equation of motion as

[tex]\begin{gathered} v=u+at \\ t=\frac{v-u}{a} \end{gathered}[/tex]

Substitute the values in the above expression as

[tex]\begin{gathered} t=\frac{100-0}{10} \\ =10\text{ s} \end{gathered}[/tex]

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