If a ball is thrown in the air with a velocity 40 ft/s, its height in feet t seconds later is given by y = 40t − 16t2. (a) Find the average velocity for the time period beginning when t = 2 and lasting (i) 0.5 second. Incorrect: Your answer is incorrect. ft/s (ii) 0.1 second. Incorrect: Your answer is incorrect. ft/s (iii) 0.05 second. Incorrect: Your answer is incorrect. ft/s (iv) 0.01 second. Incorrect: Your answer is incorrect. ft/s (b) Estimate the instantaneous velocity when t = 2.

Question

If a ball is thrown in the air with a velocity 40 ft/s, its height in feet t seconds later is given by y = 40t − 16t2. (a) Find the average velocity for the time period beginning when t = 2 and lasting (i)    0.5 second. Incorrect: Your answer is incorrect. ft/s  (ii)    0.1 second. Incorrect: Your answer is incorrect. ft/s  (iii)    0.05 second. Incorrect: Your answer is incorrect. ft/s  (iv)    0.01 second. Incorrect: Your answer is incorrect. ft/s  (b) Estimate the instantaneous velocity when t = 2.

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