Applications: Differentiation
Differentiation
Susan throws a basketball off a cliff that is #\unit{95}{m}# high. The height of the ball #h(t)# is measured in metres and the time #t# is measured in seconds. The ball leaves Susan's hand at #t =\unit{0}{s}#.
The height of the ball is given by the following function and graph below:
\[ h(t) = -4.9t^2 + 8 t + 95 \] You can click the throw button in the graph to see a visualisation of this.
The height of the ball is given by the following function and graph below:
\[ h(t) = -4.9t^2 + 8 t + 95 \] You can click the throw button in the graph to see a visualisation of this.
When the ball is moving upwards, it has a positive vertical velocity (speed). When the ball is moving downwards, it has a negative vertical velocity.
What is the vertical velocity of the ball just after it leaves Susan's hand?
Give your answer as an integer.
| velocity #=# | #\unit{}{m/s}# |
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