Electric Current: The rate of flow of charge is current. An ampere is the flow of one coulomb through an area in one second.
Answer: Gravitational force
Explanation:
A non contact force can be described as a force applied to an object by another body that is not in direct contact with it.
For example, an object thrown upwards will return back due to the force of gravity acting on it. So, it means Gravitational force is acting on the body without necessarily being in contact with that body.
Answer:
speed = distance/time
this is the equation substitute your values and get the answer....btw check you question again..
F=ma so a=F/m
a=225/55=4.09 m/sec^2