Answer:
2.815 seconds
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
Time taken with the acceleration is 94.25 seconds
Time = Distance / Speed
Difference in time = 97.065-94.25 = 2.815 seconds
Answer:
yes
Explanation:
when we throw a ball upwards, it will eventually come back to us because of force.
Answer:
momentum= mass x velocity
= 11 x 1200 =13200kgm/s
Answer:
v = √ k e²/m r
Explanation:
From the classical point of view the force between the nucleus and the electron is electrostatic
F = q E
q = e
we apply Newton's second law
F = m a
where the centripetal accelerations
a = v² / R
we substitute
e E = m v² / r
v² = ( e/m E r)
the electrioc field is
E = k q/r²
v² = e/m k e/r
v = √ k e²/m r