Answer:
Friction = 5.027 N
Explanation:
Kinetic friction does not change with speed or acceleration. The only thing that is required is to state that the object is moving.
Solving the force equation for friction we get:
Friction = coefficient of friction* normal force exerted by the object
Friction = u * R
here R is = 0.84 * Gravity = 0.84 * 9.81 = 8.2404 N
u = 0.61 (as stated in the question)
So frictional force will be:
Friction = 0.61 * 8.2404
Friction = 5.027 N
Explanation:
The range <em>R</em> of a projectile is given the equation
The maximum range is achieved when 
so our equation reduces to
We can solve for the initial velocity 
as follows:
or
To find the maximum altitude H reached by the missile, we can use the equation
At its maximum height H, 
so we can write
or
![\:\:\:\:\:\:= \dfrac{[(9.6×10^3\:\text{m/s})\sin{45°}]^2}{2(9.8\:\text{m/s}^2)}](https://tex.z-dn.net/?f=%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%3D%20%5Cdfrac%7B%5B%289.6%C3%9710%5E3%5C%3A%5Ctext%7Bm%2Fs%7D%29%5Csin%7B45%C2%B0%7D%5D%5E2%7D%7B2%289.8%5C%3A%5Ctext%7Bm%2Fs%7D%5E2%29%7D)
Answer:
kinetic energy is when an object is moving
Answer:
Explanation:
It's equal to change of momentum in contact
