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9. A construction worker accidently drops a hammer from a height of 90 m while working on the roof of a new apartment building. The height, s, in metres, of the hammer after t seconds can be modelled by the function s(t)=90–4.9t²,t>0- a. Determine the velocity at 1s and 4 s. b. When will the hammer hit the ground? c. Determine the impact velocity of the hammer.

9. A construction worker accidently drops a hammer from a height of 90 m while working on the roof of a new apartment building. The height, s, in metres, of the hammer after t seconds can be modelled by the function s(t)=90–4.9t²,t>0- a. Determine the velocity at 1s and 4 s. b. When will the hammer hit the ground? c. Determine the impact velocity of the hammer.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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9. A construction worker accidently drops a hammer from a height of 90 m while working on the roof of a new apartment building. The height, s, in metres, of the hammer after t seconds can be modelled by the function s(t)=90–4.9t²,t>0- a. Determine the velocity at 1s and 4 s. b. When will the hammer hit the ground? c. Determine the impact velocity of the hammer.
Transcribed Image Text:9. A construction worker accidently drops a hammer from a height of 90 m while working on the roof of a new apartment building. The height, s, in metres, of the hammer after t seconds can be modelled by the function s(t)=90–4.9t²,t>0- a. Determine the velocity at 1s and 4 s. b. When will the hammer hit the ground? c. Determine the impact velocity of the hammer.
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