In mechanics, the normal force<span> is the component, perpendicular to the surface (surface being a plane) of contact, of the contact </span>force<span> exerted on an object . We calculate as follows:
</span>∑F along x = 0 = F - Fn
<span>
Fn = F = mg = 7.52(9.81) = 73.77 N <------OPTION B</span>
Answer:
Kinetic energy is 1000 J.
Explanation:
Given:
Mass of the bicycle,
Distance traveled,
Time of travel,
Unknowns:
Speed of the bicycler, .
Kinetic energy of the bicycler.
Equation:
Speed of the bicycler is,
Therefore, the kinetic energy of the bicycler is given as,
Substitute:
Plug in 5 m/s for and 80 kg for . Solve for KE.
Solve:
Therefore, his kinetic energy is 1000 J.
Answer:
The arrow-apple combo will move with a velocity 3.6 m/s to the right.
Explanation:
Use the law of conservation of momentum to solve this problem. In this case the law can be written as follows:
from which the desired velocity can be isolated:
The arrow-apple combo will move with a velocity 3.6 m/s to the right.