3. The velocity of a particle is given by v = 251²-80t-200, where v is in feet per second and t is in seconds. Find the velocity when the acceleration is zero.

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3. The velocity of a particle is given by v = 25t2-80t-200, where v is in feet per second and t is in seconds. Find
the velocity when the acceleration is zero.
4. The velocity of a particle which moves along the s-axis is given by v = 2-4t+5t, where t is in seconds and v
is in meters per second. Evaluate the position s, velocity v, and acceleration a when t = 3 s. The particle is at
the position so = 3 m when t = 0.
Transcribed Image Text:3. The velocity of a particle is given by v = 25t2-80t-200, where v is in feet per second and t is in seconds. Find the velocity when the acceleration is zero. 4. The velocity of a particle which moves along the s-axis is given by v = 2-4t+5t, where t is in seconds and v is in meters per second. Evaluate the position s, velocity v, and acceleration a when t = 3 s. The particle is at the position so = 3 m when t = 0.
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