Answer:
Explanation:
Momentum depends on mass and velocity
Second part
Momentum = m * v
If you triple the velocity, you are going to have to triple the momentum
3*momentum = m * 3v
momentum started at 50. If you triple it, you get 3 * 50 = 150 kg m/s
Given Information:
Mass of sock = 0.23 kg
Stretched length of sock = x = 2.54 cm = 0.0254 m
Required Information:
Spring constant = k = ?
Answer:
Spring constant = k = 88.82 N/m
Explanation:
We know from the Hook's law that
F = kx
Where k is spring constant, F is the applied force and x is length of sock being stretched.
k = F/x
Where F is given by
F = mg
F = 0.23*9.81
F = 2.256 N
So the spring constant is
k = 2.256/0.0254
k = 88.82 N/m
Therefore, the spring constant of the sock is 88.82 N/m
It really doesn't matter how long the flight of stairs is. What we really need to know is how much height Mary gained, straight up. We don't know that. If we knew the height then the total amount of work she did would be 87 x the height in meters. The unit is joules. Then the power she delivered would be that number divided by the six seconds and that unit is watts.
By the way ... it's troubling that Mary's weight is only about 20 pounds. It's doubtful that such a tiny creature could run up a flight of stairs.
Answer:
Within the realm of Newtonian mechanics, an internal frame of reference or internal reference frame, is one in which newton's law of motions is valid
The atoms that the electrons leave behind become positive ions<span>, and the interaction between such </span>ions<span> and valence electrons gives rise to the cohesive or binding force that </span>holds<span> the metallic crystal </span>together<span>.</span>