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yulyashka [42]
2 years ago
15

HELP HELP HELP HELP HELPPPPPPPPPPP

Physics
2 answers:
Firdavs [7]2 years ago
5 0

Initial velocity (u) = 2 m/s

Acceleration (a) = 10 m/s^2

Time taken (t) = 4 s

Let the final velocity be v.

By using the equation,

v = u + at, we get

or, v = 2 + 10 × 4

or, v = 2 + 40

or, v = 42

The final velocity is 42 m/s.

Murljashka [212]2 years ago
4 0
  • initial velocity=u=2m/s
  • Acceleration=a=10m/s^2
  • Time=t=4s
  • Final velocity=v

Using first equation of kinematics

\\ \sf\longmapsto v=u+at

\\ \sf\longmapsto v=2+10(4)

\\ \sf\longmapsto v=2+40

\\ \sf\longmapsto v=42m/s

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Answer:

t = 2.58*10^-6 s

Explanation:

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In this case you can assume that the proton is in the region for r > R. Furthermore you use the secon Newton law in order to find the acceleration of the proton produced by the force:

F=m_pa\\\\qE=m_pa\\\\k\frac{qQ}{r^2}=m_pa\\\\a=k\frac{qQ}{m_pr^2}

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