Answer:
their electrical potential energy decreases. True, because of the negative sign as the distance decreases, it becomes more negative.
The kinetic energy increases. True, the force is attractive as the distance decreases the force increases, so acceleration and therefore the speed
Explanation:
The only force between the proton and the electron is electric
Fe = k q1q2 / r2
Fe = - k e2 / r2
We can see that it is an attractive force (negative sign)
The electric power energy is
U = k q1 q2 / r
U = -k e2 / r
The kinetic energy is
K = ½ m v2
With the expressions for each term we can analyze the sentences
:
Their electric potential energy increases. False,
their electrical potential energy decreases. True, because of the negative sign as the distance decreases, it becomes more negative.
The kinetic energy increases. True, the force is attractive as the distance decreases the force increases, so acceleration and therefore the speed
Kinetic energy decreases False
The acceleration decreases. False, as the force increases so does the acceleration
