Q7:  A 975 kg sports car accelerates from rest to 95 km/hr in 6.4 seconds.  What is the average power delivered by the engine?

The Producer Price Index is based on prices paid for supplies and inputs by

You will use this problem for Questions 10 and 11 and a BONUS question.  Read carefully!   A block slides from rest down a frictionless ramp, where it then encounters a flat rough floor, mk = 0.55, as shown in the diagram below.  Q10: How fast is the block traveling when it reaches point A at the bottom of the ramp? Q11:  How much work is done by friction to bring the block to a stop? (BONUS) How far across the rough floor does it travel before coming to a stop? For this question, enter the answer to the BONUS question. (+5) (any points earned will be added by me when I grade the written work)  

What is the typical frequency of fixations while an adult is reading?​

GDP per Capital is calculated by

Which of the following is an example of one of the major categories in the overall CPI?

You will use this problem for Questions 8 and 9.  Read carefully!   In physics class, two “frictionless” carts are placed on a track.  The first cart (m1 = 0.620 kg) is pushed to the right with a speed of 4.5 m/s.  The second cart (m2 = 0.790 kg) is pushed to the left with a speed of 1.8 m/s.  If the first cart rebounds with a speed of 0.9 m/s, Q8:  find the speed and direction of the second cart. Q9:  Determine whether the collision is elastic or not. You must show your work for full credit!   For this question, enter the answer to Q9. (You will select “elastic” or “inelastic”.  Your points will be determined based on your written work and can change, even if you answer this correctly).

You will use this problem for Questions 1 and 2.  Read carefully!   A box is moved 3 m across a rough surface by the force shown in the diagram below.  Q1:  How much work is done by the 40 N force? Q2: How much work does friction do as the box is moved 3 m? For this question, enter the answer to Q2.

You will use this problem for Questions 5 and 6.  Read carefully!   A bullet, mb = 0.015 kg, is fired horizontally with a velocity of 800 m/s.  The bullet strikes a stationary wooden block, mw = 3.0 kg, that is hanging from a string.  The bullet embeds itself in the block of wood.  (see diagram below) Q5:  Find the speed of block and bullet immediately after the collision. Q6:  After the collision, what is the maximum height that they will reach, as measured from the block’s initial position? For this question, enter the answer to Q5.  

If the number of employed persons in a country equals 24 million, the number of unemployed persons equals 8 million, and the number of persons in the civilian labor force equals 32 million, the unemployment rate equals: