How Do You Calculate Proton Acceleration in an Electric Field?

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To calculate the proton's acceleration in a uniform electric field of 639 N/C, use the formula a = F/m, where F is the force (F = qE) and q is the charge of the proton (approximately 1.6 x 10^-19 C). The resulting acceleration is approximately 1.01 x 10^13 m/s². To find the time taken to reach a speed of 1.78 x 10^6 m/s, use the equation t = v/a, yielding a time of about 1.76 microseconds. The distance traveled during this time can be calculated using d = 0.5at², resulting in a distance of approximately 0.015 m. Finally, the kinetic energy at this speed can be determined using KE = 0.5mv², which equals approximately 2.51 x 10^-10 J.
bsharif
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College home work ..please help ASAP! :)

1. A proton accelerates from rest in a uniform electric field of 639 n/c. At some time later , its speed is 1.78 * 10^6 m/s.

What is the magnitude of the acceleration of the proton ? Answer in units of m/s^2.

2. How long does it take the proton to reach this speed ? answer in units of us.

3. How far has it moved in this time interval ?
Answer in units of m

4. What is the kinetic energy at the later time ?
Answer in units of J.



Please Help ..

Thank you
 
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