Read the excerpt from a student’s essay. Coastal towns should protect themselves from floods by building sand walls that keep out water from oceans, lakes, and rivers. However, some say that these sand walls are an eyesore. They reduce the value of the homes and buildings that they try to protect because they look bad.

Which statement presents the best rebuttal to address the counterclaim?

The value of the coastal homes is more important than oceans, lakes, and rivers.
The protection of homes and buildings in coastal towns with sand walls is important.
Sand walls may be ugly, but the protection of people and property is more important.
People living along the coasts should seriously consider moving further inland.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped