A model airplane is flying North with a velocity of 15 m/s. A strong wind is blowing South at 12 m/s.

What is friction? how does it affect the motion of an object?

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 .

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?