Could be old age. Usually, either the motor dies that spins the wheel or the bendix doesn't kick the gear out to engage with the flywheel. Sometimes the solenoid fails too.
No.
A bad starter might make a noise. The starter could also go bad with no noise or warning. However if the starter is making noise then there is a problem that could cause failure at any time
No.
No, unless the hit was hard enough to loosen electrical connections.
A starter can go bad for many reasons. There could be a loose connection that eventually burns it out. A chipped tooth on the flywheel can damage it. Or it could just go bad with age.
Turn on your headlights and try to sart the engine. If the lights go out the battery is probably bad. The contacts on the starter solonoid don't cause it to click.
My ignition relay was damaged and it caused my starter to go out, which cause my car to shut down.
A bad alternator will cause a battery to go bad. It does not have an effect on the air conditioner.
a bad connection
Yes it will.
Depending on the vehicle year it can keep power going to the distributor and possibly ruin it. The starter only gets engaged when your turn the key past "start" position.
i dont think u can cause it cause go bad and the dog would just eat it!