Physics
12.06.2023 00:38
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Suppose the position of an object moving in a straight line is given by s (t )equals
Suppose the position of an object moving in a straight line is given by s (t )equals 5 t cubed minus 2 t squared plus 9. Find the instantaneous velocity when tequals7.
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smolemily
4,7(45 marks)
Explanation:
s(t) = 5t³-2t²+9
Instantaneous velocity v = ds / dt
v = ds/dt = 15t²-4t
Putting t = 7
v = 15 x 7² - 4 x 7
= 707
Instantaneous velocity at t = 7
is 707 unit .
tinytoonjr6901
4,4(99 marks)
The answer is a. Bc if it bonds with the water it well be dangerous for the animals in the sea.
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