Answer:
Explanation:
a is the acceleration
μ is the coefficient of friction
Acceleration of the object is given by

Velocity at the bottom

after travelling 4m , its velocity becomes 0



Coefficient of kinetic friction
μ = F/N

Therefore, the Coefficient of kinetic friction is 0.31
The De Broglie wavelength of the electron is

And we can use De Broglie's relationship to find its momentum:

Given

, with m being the electron mass and v its velocity, we can find the electron's velocity:

This velocity is quite small compared to the speed of light, so the electron is non-relativistic and we can find its kinetic energy by using the non-relativistic formula:
Vf = Vi + at
Vf = 0 + 5.4•28
= 151.2m/s..
not sure if its right
Air resistance force
tension force
spring force
frictional force
normal force
gravitational force
applied force
please give me brainly:)
Answer:
I think u are traeling at speed of light and not ur friend
Explanation: