Author Question: At time t, the position of a body moving along the s-axis is m. Find the body's acceleration each ... (Read 194 times)

lidoalex · **on:** Dec 18, 2021

Question 1

The position of a body moving on a coordinate line is given by

with s in meters and t in seconds. When, if ever, during the interval

does the body change direction?
◦ t = 14 sec
◦ t = 7 sec
◦ t = 3.5 sec
◦ no change in direction

Question 2

At time t, the position of a body moving along the s-axis is

m. Find the body's acceleration each time the velocity is zero.
◦ a(2) = -6 m/sec², a(4) = 6 m/sec²
◦ a(2) = 0 m/sec², a(4) = 0 m/sec²
◦ a(2) = 6 m/sec², a(4) = -6 m/sec²
◦ a(4) = 24 m/sec², a(8) = 4 m/sec²

mrphibs · **Reply #1 on:** Dec 18, 2021

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