Answer:572.02 N
Explanation:
Given
mass of sofa m =63 kg
inclination
acceleration
Let T be the tension in the string
You don't. Although tons of stories have been written about it,
and loads of scientific speculation about how it maybe possibly
might be done, it's never been done.
Answer: 125/24 N
Explanation:
The work can be calculated with W = Fs
Where W = work
F = force
and s = displacement
Let's set up the equation:
500w = F * 96m
= 125/24 or roughly 5.2 N of force
Answer:
d//
Explanation:
there is a total fat content of 8 grams
Answer:
The coefficient of restitution is greater in a head-on collision
Explanation:
Let m be the masses of the electric vehicles and v be their initial speeds. Since they are moving in opposite directions, the momentum, p₁ of the first electric vehicle = mv and that of the second vehicle is p₂ = -mv. Let p₃ and p₄ be their final momenta. From the law of conservation of momentum, momentum before impact = momentum after impact.
So, p₁ + p₂ = p₃ + p₄
mv + (-mv) = p₃ + p₄
mv - mv = p₃ + p₄
0 = p₃ + p₄
p₃ = -p₄
mv₃ = -mv₄
v₃ = -v₄. where v₃ and v₄ are their final velocities. This shows that their final velocities are not zero. So they do not come to a stop.
Now, we calculate the coefficient of restitution, e = -(v₄ - v₃)/(v₂ - v₁) = -(v₄ -
(-v₄))/(-v - (v))= - (v₄+ v₄)/-(v + v) = 2v₄/2v = v₄/v. Since e ≠ 0, the vehicles do not come to a stop
Head-on collisions are more jarring because, the coefficient of restitution is greater in an head-on collision because, the maximum value of the velocity is used by the electric vehicles. They only have velocity components in one direction, thereby, having a maximum value for the coefficient of restitution.