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1. Homework Statement

I need to find the times when the velocity is 0.

I am having difficulties finding multiple values for t.

v(t)=0

2. Homework Equations

v(t)=-40/3*cos(3/2*t)-5.129

3. The Attempt at a Solution

Attempt at solution:

v(t)=-40/3*cos(3/2*t)-5.129

V(t)=0

0=-40/3*cos(3/2*t)-5.129

cos(3/2*t)=-5.129*3/40

3/2*t=arccos(-5.129*3/40)

t=2/3*arccos(-5.129*3/40)

t=1.31

now I am not able to find the other values of t, I tried adding pi/2 but it didn't work

(it should be in radians)

I need to find the times when the velocity is 0.

I am having difficulties finding multiple values for t.

v(t)=0

2. Homework Equations

v(t)=-40/3*cos(3/2*t)-5.129

3. The Attempt at a Solution

Attempt at solution:

v(t)=-40/3*cos(3/2*t)-5.129

V(t)=0

0=-40/3*cos(3/2*t)-5.129

cos(3/2*t)=-5.129*3/40

3/2*t=arccos(-5.129*3/40)

t=2/3*arccos(-5.129*3/40)

t=1.31

now I am not able to find the other values of t, I tried adding pi/2 but it didn't work

(it should be in radians)

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