16. What is the approximate velocity of the particle at time t = 7 seconds? a) i

Question

16. What is the approximate velocity of the particle at time t = 7 seconds?  

a) it is at rest  

b) + 2.3 m/s  

c) + 3.6 m/s

# d) + 17 m/s  

e) undefined

17. What is the approximate acceleration of theparticle at time t = 7 seconds?  

a) 0 m/s2

# b) + 3.5 m/s2

c) + 2.4 m/s2

d) + 5.4 m/s2  

e) undefined

18. What is the approximatedisplacement of the particle during the first 10 seconds?

a) +10 m  

b) +20 m  

c) +30 m

# d) +50 m  

e) +70 m

19. What is the approximate average velocity of the particle during the first 10 seconds?

a) +2 m/s  

b) +3 m/s  

c) +4 m/s

# d) +5 m/s  

e) +6 m/s

# = the correct answer. Please show me how these are found.

Explanation / Answer

16. d) (just read it off the graph (value of y at t=7). 17, b) Slope is approx 3.5 at 7 sec. (goes from about 16.5 to 20 from 7 to 8 seconds) 18 d) count squares with each square 5 meters 19. d) answer in 18 divided by 10 (number of seconds).

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