You can test if it’s true by holding a pencil in mid air over a table and the table is supposed to be the unbalanced forced that stopped the pencil from moving at the constant velocity it was going by.
Because the act of braking is an example of negative acceleration.
Example: if the rate of braking was say 2 meters per second^2, and the starting velocity was 10 m/s, it would take 5 seconds to come to a stop(during those 5 seconds you would still be moving).
Answer:
(a) 
(B) 
Explanation:
We have given the the speed of the electron =10^6 m/sec
The time period of the electron is given by 
where r is the Bohr radius, which is equal to 
So time period 
(A) We know that current 
(B) Magnetic moment is given by 
, where I is current and A is area
So 
Answer:
radiation heat.
Explanation:
That is any heat that passes through the air, like the sun.
