An object is thrown upward with an initial velocity of 32.1 m/s What is its velocity in 4 s? use g = 9.81
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An object is thrown upward with an initial velocity of 32.1 m/s What is its velocity in 4 s? use g = 9.81

[From: ] [author: ] [Date: 11-07-04] [Hit: ]
g=9.so v=32.1+9.v=32.1+39.v=71.......
can anyone help me please... i cant do it

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v = u - gt = 32.1 - 9.81 * 4 = -7.1 m/s

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Now to answer this question apply equations of motion that is v=u+at.
But u=32.1m/s
v=?
t=4s
g=9.8m/s square
so v=32.1+9.8x4
v=32.1+39.2
v=71.3m/s
1
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