Physics, 10.06.2021 22:50 Mikkixo3735
Suppose you pull a 45 N wooden box on a rough flat surface by pulling on the box with a horizontal force P, acting to
the right. Assume the frictional force is 3 N.
A) Determine the magnitude of P if the box is pulled at a constant velocity.
B) Assume the box was initially at rest, determine P to displace the box 3 m in 2 seconds.
Answers: 1
Physics, 22.06.2019 15:00
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Physics, 22.06.2019 16:40
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
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Physics, 22.06.2019 18:20
An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped
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Suppose you pull a 45 N wooden box on a rough flat surface by pulling on the box with a horizontal f...
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