A motorcycle and a truck are both moving in the same directi…

A motorcycle and a truck are both moving in the same direction in adjacent lanes on a highway. At a particular instant, the speed of the motorcycle is four times as large as the speed of the truck v. At that instant, the motorcycle is accelerating forward while the truck is moving at a constant velocity. Which one of the following statements best describes which vehicle has a larger momentum at that instant?  

Two identical bullets are fired horizontally with identical…

Two identical bullets are fired horizontally with identical speeds v0 at two blocks of equal mass. The blocks rest on a frictionless horizontal surface and are made of hard steel and soft wood respectively (see diagram below). One bullet bounces elastically off the steel block. The other bullet becomes embedded inside the wood block. Which one of the following statements best describes which block travels faster after the collision?

Carts A and B are identical in all respects before the colli…

Carts A and B are identical in all respects before the collision.   Diagram (i): Cart A starts from rest on a hill at a height h above the ground. It rolls down and collides “head-on” with cart B which is initially at rest on the ground. The two carts stick together.   Diagram (ii): Carts A and B are at rest on opposite hills at heights h/2 above the ground. They roll down, collide “head-on” with each other on the ground and stick together.          Which of the following statements is true about the two-cart system just after the carts collide in the two cases?   Just after the collision,

**Extra Credit – up to 5 points** Will need to be documented…

**Extra Credit – up to 5 points** Will need to be documented in video of HonorLock before closing the exam to earn full credit.   The concentration C, in nanograms per milliliter, ng/mL , of a medication in the body t hours after treatment is given by the function