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Colt1911 [192]
3 years ago
6

An object, initially at rest moves 250m in 17s. What is it's acceleration?

Physics
1 answer:
Gekata [30.6K]3 years ago
8 0
With the values you've given, only velocity can be found.
Acceleration is rate of change of velocity

d= 250s
t= 17s

a= d/t
 =\frac{250}{17}
 = 4.7 \frac{m}{s}
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A box sits at rest on a rough 33° inclined plane. Draw the free-body diagram, showing all the forces
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(a) The free body of all the forces include, frictional force, weight of the box acting perpendicular and another acting parallel to the plane.

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<h3>Free body diagram</h3>

The free body diagram of all the forces on the box is obtained by noting the upward force and downward forces on the box as shown below;

                      /  W2

                    Ф → Ff

                    ↓W1

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  • W2 is the parallel component of the box weight = Wsin(33)

(b) When the box is sliding down, the frictional force acts towards the right.

(c) When the box slides up, the direction of the frictional force changes, it acts towards the left.

Learn more about free body diagram of inclined objects here: brainly.com/question/4176810

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