Abee goes out from its hive in a spiral path given in plane polar coordinates by r= bekt a = ct where b, c and k are positive constants. show that the angle between the velocity and acceleration vectors remains constant as the bee moves outward (hint: find v. a/va).

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 .