6. A 0.045 kg bullet is fired at 340 m/s at a 3.5 kg wooden block that is hanging from a 3 m long string. If the bullet passes through the block and emerges out the other side traveling at 50 m/s, what angle does
the string make with the vertical when the block gets to its highest position?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .