Displacement, Velocity, Acceleration, Newton's Laws, Work, Energy, Momentum, Fluid Mechanics, Heat and Thermodynamics - 1) A person paddling a canoe travels five miles down a canal and then seven miles up the canal. a) How far did the person travel? b) What is his final displacement? 2) A test vehicle on a track goes through photo gates spaced 25 m a...

pair of forces - Consider a pair of forces, one having a magnitude of 20 N, and the other having a magnitude of 12 N. What maximum net force is possible for these two forces? What is the minimum net force possible?

ball rolling down a bowling alley and the law of inertia - Start a ball rolling down a bowling alley and you’ll find it moves slightly slower with time. Does this violate Newton’s law of inertia? Defend your answer.

In terms of Newton’s first law (the law of inertia), how does a car headrest help to guard against whiplash in a rear-end collision? - In terms of Newton’s first law (the law of inertia), how does a car headrest help to guard against whiplash in a rear-end collision?

Two boxes are seen to accelerate at the same rate - Two boxes are seen to accelerate at the same rate when a force F is applied to the first box and 4F is applied to the second box. What is the mass ratio of the boxes?