Answer :
The speed of an 8.7m ev proton is v = 4.1 x 107 m/s.
What is kinetic energy?
Kinetic energy is defined as the energy that is produced by an object due to its motion. When an object is set to acceleration, there is a definite need to apply certain forces. The application of force needs work, and after the work is done, the energy gets transferred to the object making it move at a constant velocity.
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity:
k = 1/2 mv2
m = 1.7 x 10-27 Kg
v = √2k/m
v = √(2x8.7x106x16x10-19 )/1.7x10-27
v = 4.1 x 107 m/s
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