The position of a softball tossed vertically

upward is described by the equation

y = c1 t − c2 t2,

where y is in meters, t in seconds, c1 =

2.88 m/s, and c2 = 6.67 m/s2.

Find the ball’s initial speed v0 at t0 = 0 s.

Answer in units of m/s.

(part 2 of 3)

Find its velocity at t = 1.71 s. Answer in

units of m/s.

(part 3 of 3)

Find its acceleration at t = 1.71 s. Answer in

units of m/s2.

upward is described by the equation

y = c1 t − c2 t2,

where y is in meters, t in seconds, c1 =

2.88 m/s, and c2 = 6.67 m/s2.

Find the ball’s initial speed v0 at t0 = 0 s.

Answer in units of m/s.

(part 2 of 3)

Find its velocity at t = 1.71 s. Answer in

units of m/s.

(part 3 of 3)

Find its acceleration at t = 1.71 s. Answer in

units of m/s2.

## This question was asked on May 19, 2010.

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