1.3

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1. If a ball is thrown in the air with a velocity 46 ft/s, its height in feet t seconds later is given by y = 46t -16t^2.
a. Find the average velocity for the time period beginning when t = 2 and lasting
(i) 0.5 second. Answer: -26
(ii) 0.1 second. Answer: -19.6
(iii) 0.05 second. Answer: -18.8
(iv) 0.01 second. Answer: -18.16
b. Estimate the instantaneous velocity when t = 2.
If a ball is thrown in the air with a velocity 48 ft/s, its height in feet t seconds later is given by y = 48t -16t^2.
c. Find the average velocity for the time period beginning when t = 2 and lasting
(v) 0.5 second. Answer: -24
(vi) 0.1 second. Answer: -17.6
(vii) 0.05 second. Answer: -16.8
(viii) 0.01 second. Answer: -16.16
d. Estimate the instantaneous velocity when t = 2.
If a ball is thrown in the air with a velocity 50 ft/s, its height in feet t seconds later is given by y = 50t -16t^2.
e. Find the average velocity for the time period beginning when t = 2 and lasting
(ix) 0.5 second. Answer: -22
(x) 0.1 second. Answer: -15.6
(xi) 0.05 second. Answer: -14.8
(xii) 0.01 second. Answer: -14.16
f. Estimate the instantaneous velocity when t = 2.
Use the given graph of f to state the value of each quantity, if it exists. (If an answer does not exist, enter DNE.)
2. (a) Answer: 3
For the function g whose graph is given, state the value of each quantity, if it exists. (If an answer does not exist, enter DNE.)
3. (a) Answer: -1
4. If an arrow is shot upward on the moon with a speed of 64m/s its height in meters t seconds later is given by y = 64t – 0.83t^2 (Round your answer to two decimal places.)
(a) Find the average speed over the given time intervals.
(b) Estimate the speed when t = 1

If an arrow is shot upward on the moon with a speed of 68m/s its height in meters t seconds later is given by y = 68t – 0.83t^2 (Round your answer to two decimal places.)
(c) Find the average speed over the given time intervals.
(d) Estimate the speed when t = 1

5. Evaluate the function f(x) at the given numbers(correct to six decimal places).
f(x) = (x^2-3x)/(x^2-2x-3), x = 0,-0.5,-0.9,-0.95,-0.99,-0.999,-2,-1.5,-1.01,-1.001
f(0) = 0
f(-0.5) = -1
f(-0.9) = -9
f(-0.95) = -19
f(-0.99) = -99
f(-0.999) = -999
f(-2) = 2
f(-1.5) = 3
f(-1.1) = 11
f(-1.01) =101
f(-1.001) = 1001
Guess the value of the limit of f(x) as x approaches -1, correct to six decimal places. (If an answer does not exist, enter DNE.)
lim x approaches -1 [(x^2-3x)/(x^2-2x-3)] = DNE
**All answers are the same for this problem even with different red numbers. **

6. Use a table of values to estimate the value of the limit. If you have a graphing device use is to confirm your results graphically. (Round your answer to two decimal places.)
Lim x approaches 0 ((sqrt(x+49)-7))/x