Answer:
4.5 m
Explanation:
We are given that
Mass of block,m=8 kg
Apply work energy theorem
Where 
Integrating on both sides
integrating on both sides
Substitute t=3 s
Hence, the displacement of the block after 3 s=4.5 m
Answer:
Hooke's law describes the elastic properties of materials only in the range in which the force and displacement are proportional. Hooke's law states that the applied force F equals a constant k times the displacement or change in length x, or F = kx. the maximum extent to which a solid may be stretched without permanent alteration of size or shape, is called elastic limit
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Displacement is the distance between the starting and ending points, in the direction from the starting point to the ending point, all regardless of the route followed from the starting point to the end point.
The woman's displacement is therefore 30 meters north.
Answer:
Explanation:
Potential Energy= Kinetic Energy
Let 
be the value of Kinetic Energy.
We know that
Make 
the subject of the formula to get speed at the bottom of the hill.
the ball will stay moving at the same rate of speed until something happens and stop it
