false. all obejects in motion have friction
Answer:
C
Explanation:
Static electricity is what makes your hair stand up when you rub a balloon against it or gives you a shock from your doorknob. In static electricity, electrons are moved around mechanically (i.e. by someone rubbing two things together).
HOPE THIS HELPED AND LETTER D MADE ME LAUGH
Velocity
Because velocity is speed with direction. In this scenario, the speed has not changed, but the direction did.
Answer:
See description
Explanation:
With the given information we have:

the interval is ![[0,\pi ]](https://tex.z-dn.net/?f=%5B0%2C%5Cpi%20%5D)
now the mass
has the given expression:

we will use the formula for a line integral and let:

therefore we have:

we solve the integral:
