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- 1. Multiple Choice
April shoots an arrow upward at a speed of 80 ft/sec from a platform of 25 ft. high. The pathway of the arrow can be represented by the equation h = -16t2 + 80t + 25, where h is the height and t is the time in seconds. What is the maximum height that the arrow reaches?
80 ft.
90 ft.
140 ft.
125 ft.
- 2. Multiple Choice
A rock is dropped from a bridge 320 ft. above a river. The pathway that the rock takes can be modeled by the equation h = -16t2 + 320. How long will it take for the rock to reach the river (i.e. hit the "ground")?
2.5 sec
3.5 sec
4.5 sec
3.8 sec
- 3. Multiple Choice
A toy rocket is launched and its height is modeled by the equation h = -16t2 + 32t + 48. What is the initial heigh of the object?
48 ft.
16 ft.
32 ft.
2 ft.
- 4. Multiple ChoiceIf path of a projectile is modeled by:
h(t) = -16t2 + 20t +6, what is the height after 1 second?6 feet20 feet10 feet4 feet - 5. Multiple Choice
An object in launched directly upward and the height of the object is represented by the equation s(t) = –16t2 + 64t + 80. What is the initial velocity the object is launched at?
64 feet
80 feet
16 feet
-16 feet
- 6. Multiple Choice
A dolphin jumps from the water at at initial velocity of 16 feet per second. The equation h = -8t2 + 16t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps?
1 foot
5 feet
7 feet
8 feet
12 feet
- 7. Multiple Choice
You and some friends went to a haunted house on Halloween. The mummy scared one friend so much that she jumped into the air! The equation h = -4t2 + 2t models her jump where h is her jump's height in feet t seconds after the mummy scares her. When did she reach her maximum height?
0.1 seconds
0.25 seconds
0.50 seconds
1 second
2 seconds
- 8. Multiple Choice
A lizard is jumping across the water in search of food. The equation h = -12t2 + 6t models the lizard's height in feet above the water t seconds after he jumps. How long after jumping is he back on the water?
0.1 seconds
0.25 seconds
0.50 seconds
0.75 seconds
1 second
- 9. Multiple Choice
Fireworks are fired from the roof of a 100-foot building. The equation h = -16t2 +84t + 100 models the height, h, of the fireworks at any given time, t. How high do the fireworks get?
2.625
6.25
100
200
210.25
- 10. Multiple Choice
Amelia runs a catering business. Based on her records, her profit is shown by P = 2x2 - 44x -150, where x is the number of meals she caters and P is her profit. When P is negative, Amelia loses money. What is the least number of meals Amelia needs to cater in order to begin making profit?
-1
5
11
25
50
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