PHYSICS 12 WCLN.ca* 6. Recognizing the following as non-right triangles, solve for all of the missing sides and angles. Show all work. a. 27 m 80- 19 m b. A 13 in 20 in C. 13 in 106 27 in C d. 137 24 km 104 C BOL 2019 Page 6 of 174 wcm.c'.- 7. Unit conversions (show all work lay out in brackets, same as lesson examples) a. 2.67 hours into seconds b. 80 km/hr to m/s c. 34 km into meters 01. 1 day into seconds e. 12 hours into seconds f. 100 km/hr into m/s g. 40 km/hr into m/s h. 12 m/s into km/hr 200 g into kg j. 10 kg into grams 80!. 2019 Page 7 of 17 PHYSICS 12 WCLN.ca 8. Label each of the following as linear or non-linear in the box below each graph. 9. Given the equations, identify the slope and y-intercept then sketch the graph. Make sure you label the axis correctly (given the variables in your equation). Slope = Slope = y-int = y-int = Equation: Equation: d = 3t + 2 V = -3t + 2 Slope = Slope = y-int = y-int = Equation: Equation: a = - 2t d = -2t + 4 Slope = Slope = y-int = y-int = Equation: Equation: V = 3t - 2 a = -2t + 2 BOL 2019 Page 8 of 17PHYSICS 12 WCLN.ca* 10. Use the data below to determine whether it's true that "the older you are, the more money you earn" using plotted data. Ensure both axes include: 1) a breaker to show that they don't start at zero 2) scales that increase in equal increments 3) good titles and units. Age Earnings ($) 25 22000 30 26500 35 29500 37 29000 38 30000 40 32000 41 35000 45 36000 55 41000 60 41000 62 42500 65 43000 70 37000 75 37500 a) What's the general trend shown by your best fit line? b) Does it generally support the hypothesis? c) About how much more does a person earn per year (in general)? Show all work. d) Is there an area of the graph that doesn't seem to follow this trend? Can you explain why? 11. Graph the above data using a spreadsheet program and include the results as your last page. BOL 2019 Page 9 of 174 WCLN.ca"'-r 12. Suppose that the water level of a river is 34 meters and that it is receding at a rate of 0.5 meters per day. Write an equation for the water level, L, after d days. In how many days will the water level be 26 meters? (include units for everything) 13. A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C, after h hours of service. (include units for everything) 14. A runner gets a 30 meter headstart then runs 5 km/hr. Write an equation (in base SI units) which will represent the runners distance from the start line at any second. (include units) 15. A car begins at a speed of 20 m/s then increases its speed by 2.0 m/s each second. Write an equation that represents the speed ofthe car as a function oftime. (include units) 80!. 2019 Page 10 of 17 4 WCLN.C; Kinematics Review: 1. The acceleration of a freely falling object (near Earth), when we assume no air resistance, is (remember units). This acceleration (due to gravity) is also called the and is represented by the letter 2. The assumption of no air resistance is never totally true, but is often close enough to make pretty accurate calculations. Discuss cases where this is a really good assumption and when it isn't. 3. As difcult as it is to visualize the changes in velocity, a good understanding of acceleration is needed to master kinematics problems. Recognizing that acceleration can be positive, while velocity is positive (and visa) is definitely brain exercise. BOL 2019 Object is speeding up (from still) in the positive direction. For example, a ball is placed on a slanted ramp. Velocityis positive/zero/ negative and increasing/constant/decreasing. Acceleration is positive/ zero / negative. Object is speeding up (from still) in the negative direction. For example, a ball is placed on a ramp that is slanted towards the negative direction (eg. down to the left). Velocityis positive/zero/ negative and increasing/constant/decreasing. Acceleration is positive/ zero / negative. Object is slowing down in the positive direction. For example, you push a ball up a slanted ramp. Velocity is positive/ zero/ negative and increasing/ constant idecreasing. Acceleration is positive/zero/ negative. Object is slowing down in the negative direction. For example, you push a ball up a ramp that is slanted towards the negative direction (eg. down to the right). Velocityis positive/zero/ negative and increasing/constant/decreasing. Acceleration is positive/ zero / negative. Page 11 of 17