Question

5 part question!!

Answer 1

part I: you just need to plug in t = 0 into the displacement equation

Answer 2

d=4sin(pi0)

Answer 3

good, and what does that equal?

Answer 4

0

Answer 5

good so 0 m is the displacement

for part II; maximum displacement (in this case) is equal to the amplitude, so what's the amplitude of 4sin(pi*t)?

Answer 6

4

Answer 7

awesome so the max displacement is 4m

for part III) the period is 2pi/B where B is the coefficient of t, find period

Answer 8

coefficient of t is 0 right

Answer 9

in the original equation what is being multiplied to t?

Answer 10

oh okay pi so

2pi/pi

Answer 11

i got 2

Answer 12

good so period = 2 seconds

then for part IV frequency = 1/period = ?

Answer 13

1/2

Answer 14

good

then for part V you just need to plug in t = 1.75 into the original equation

Answer 15

d=4sin(pi1.75)
d=-2sqrt2

Answer 16

I'm not sure where you're getting sqrt2 from

Answer 17

d = -2.82843 when I plug it into my calculator

Answer 18

so yeah -2.8

Answer 19

ok

Answer 20

the units for height?

Answer 21

meters