## University # Projectile Motion & Mixed Review Quadratics ## 16 questions

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• Multiple Choice
15 minutes
1 pt

The height of an object thrown into the air can be modeled by the formula h(t) = -16t2 + 70t + 95, where h(t) is in feet after t seconds.
What is the height of the object after 5 seconds?
Hint:  $f\left(5\right)=?$

95 feet

45 feet

70 feet

171.56 feet

• Multiple Choice
15 minutes
1 pt

A ball is thrown into the air with an upward velocity. Its height, h, after t seconds is given by the function below.
$h=-16t^2+64t+960$
How many seconds did it take for the ball to reach its maximum height?

Hint: look at the vertex and remember that x=seconds and y=height.

10 seconds

64 seconds

960 seconds

2 seconds

• Multiple Choice
15 minutes
1 pt

$h=-16t^2+64t+960.$  A ball is thrown into the air with an upward velocity of 100 ft/s. Its height, h, after t seconds is given by the function

When did the ball hit the ground?
Hint: when the height (h) = 0 OR the x-intercept

10 seconds

2 seconds

5 seconds

7 seconds