A 0.02kg lead bullet traveling 200 m/s strikes an armor plate 2kg at rest. Assume
all its kinetic enrgy transfer to heat what is
the change in temperature? the specific heat
of lead is for lead is 130 J/kg. C

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 .