Answer:
the velocity is 1.67 m/s
Explanation:
The computation of the velocity of the arrow/ice combination after the collison is shown below:
Here the law of conservation is applied
Here
Now
= 1.67 m/s
hence, the velocity is 1.67 m/s
The work done on the spring is equal to the elastic potential energy of a spring. We look at Hooke's law, which states that the force needed to stretch a spring is proportional<span> to the displacement of the spring.
</span><span>F = -kx
W = (integral) Fdx
</span>W = (integral) -kx dx
W = kΔx²/2
20 = k(42 - 30) / 2
k = 10/3
The answer is A because the healthiest option out of all of those selections is the fruit smoothie.
Answer:
the electrical charge would be -4
Explanation:
First thing to do is to draw the system described above. Then, write an equation for the forces present.
<span>
</span>Σ<span>F = Fg - Ff
</span><span>0 = mgsin</span><span>∅</span><span> - umgcos</span><span>∅</span><span>0 = gsin</span><span>∅</span><span> - ugcos</span><span>∅</span><span>
u = tan</span><span>∅
</span>∅(max) = tan^-1 (u)<span>
</span>