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23.) This President who took office as the result of an assassin’s bullet, came to be more closely associated with the ideals of the Progressive Era than perhaps any of his fellow inhabitants of the white house during the early 20th century?

10.) This popular social philosophy of the late 19th century seemingly justified the era’s vast income inequality and absence of national entitlement programs for the majority of Americans?

A block starts with some initial velocity and travels up a ramp as shown. Which of the following diagrams correctly shows the forces on the block? image00455ff9ad255ff9ad2.gif

Which statement is true regarding the acceleration vector?

Suppose you walk 30 meters east, 10 meters north, then 6 meters west.  How far are you from your initial position?

If you went to the Moon, how would your mass and weight change while on the surface?

An object’s position is described by x(t) = 3 – 4t + 5t2 where x is measured in meters and t is measured in seconds.  What is its speed at t = 2 seconds?

Suppose an object’s velocity vector points to the right and its acceleration vector points left.  What can you say about its motion?

On the Moon, the acceleration due to gravity is 1.6 m/s2 and there is no atmospheric drag.  During Apollo 14, Alan Shepherd hit a golf ball on the Moon.  If he hit the ball at an angle of 20° with an initial velocity of 35 m/s, find the total time the ball was above the ground.  Assume it landed at the same height as it was hit.

A block slides on a horizontal table.  If the coefficient of kinetic friction between the table and the block is 0.3, what is the acceleration?  You should find that mass cancels out when you apply Newton’s 2nd law.