- #1
tadpole
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It has been awhile since I took Physics. The other day my daughter asked some questions about force. She told her teacher explained if the object is moving horizontal the push force is 0. I said that can't be right. There has to be a force to overcome friction. This lead me thinking about other scenarios. Some of these questions are kind of silly. I hope some of you can enlighten me. Thanks for taking the time to answer my random thought.
If you shoot a gun in space, after the bullet left the gun:
a) does it accelerate ?
b) if yes, what cause it to accelerate since there is no propulsion or any kind of power to change velocity ? Does it continue to accelerate or at some point it will reach a constant velocity ?
c) if it reach a constant velocity, than does that mean the bullet no longer have force since
F = M X A. If the force is 0, than when the bullet hit me, it would not hurt, right ?
d) does it decelerate ? what cause it to decelerate ?
If you shoot a gun in space, after the bullet left the gun:
a) does it accelerate ?
b) if yes, what cause it to accelerate since there is no propulsion or any kind of power to change velocity ? Does it continue to accelerate or at some point it will reach a constant velocity ?
c) if it reach a constant velocity, than does that mean the bullet no longer have force since
F = M X A. If the force is 0, than when the bullet hit me, it would not hurt, right ?
d) does it decelerate ? what cause it to decelerate ?