okay i used the work energy theorem to find the friction force,and my other thread has disappeared. So what should i use now to find the time it takes to stop, when i tried i got 12 seconds, but that does not seem right whatsoever
A 10 gram bullet with a horizontal speed of 400m/s hits a block of wood and penetrates 12 cm.
a. what is the frictional force?
b.how long does it take the bullet to come to rest
I have the answers but cannot figure out how to get there. I set my initial velocity to 400 m./s, making my...