11. Provide a description of a sample situation for each of the graphs below (make sure to recognize each graph as d vs t, v vs t, or a vs t). d TTTTTT8. The motion of a race car on a linear track is shown below. velocity a) When is the car at the (m/min) starting line? 80 60 40 b) When is the car sitting still? 20 time min) . 20 C) When is the car going in the negative direction? - 40 10 20 30 40 50 d) What is the fastest speed logged? Show all work. e) What is the average acceleration of the car between 0 and 10 minutes? Show all work. 9. Use both area and equation to determine the displacement traveled in the following graph. 3 +101 Velocity (m/s) 0 2 3 4 Time (s) -101 10. Use both area and equation to determine the displacement traveled in the following graph. 16 12 Velocity (m/s) -+ 00 3 4 5 Time (s)6. A satellite in space is travelling at 14 m/s in one direction. A thruster is applied for 30. s and the satellite is then travelling at 12 m/s in the opposite direction. What acceleration does the thrust cause? Show all work as demonstrated in the lessons. 7. A rock is dropped off a 40. meter cliff. The rock accelerates due to gravity. What is the time it takes to hit the ground? Show all work as demonstrated in the lessons. 8. A motorcycle is travelling at a constant velocity of 90 km/h (no acceleration). How many seconds will it take the motorcycle to cover 2 km? Show all work as demonstrated in the lessons. 9. Hikers at the bottom of a canyon are facing towards the canyon wall 280.5 meters away. Given that the speed of sound in air is 340. m/s, how long after they shout will they hear their echo? Show all work as demonstrated in the lessons. 10. A woman makes a daytrip to a beach that is located 40.0 km from her home. On the trip to the beach, she averages a speed of 80.0 km/h but gets a speeding ticket upon her arrival. On the return trip, she averages just 40.0 km/h. What was her average speed for the entire trip? Show all work as demonstrated in the lessons.Answers: Intro to Kinematics: 1) magnitude, magnitude, direction 2) straight line 3) Less 4) V: displacement, force, 20m/s[N], velocity, 50m[down], 9.8m/s2[down], acceleration, 10km[SW] S: 1kg, 10km/hr, distance, 200km, 5hours, 40L, mass, speed 7) change 8) 10,0,15,-5,-10,5 9)1km[N] 10)0.5m[S] 11)+3.5m 12)58m[31 WofN] or 58m[59 NofW] 13)600.km, 447[27 WofN] Velocity 4)2.7m/s[E] 5)91[W] 6)30.s 8)21m/s 9)70km/h 10)35km/h,9.6m/s 11)40.km[E] 12)+5m, +2m/s Graphing Motion: Ba) no, y-intercepts are different b) B c) A d) A has a steeper slope e) A and B are at the same position 4)2.5s,5s,20m, 10m,4m/s,2m/s 5) a) Os,32s,55s b) 15-20s c) 20-40s d) 4m/s, 5m/s e) 3m/s f)0, 3.6m/s 6. The ball doesn't move at first. Then it moves backwards and then finally stops. position thiri 7 . Time (al 8. Timeis 9. Acceleration: 5)m, s, m/s, m/s2 6)11m/s 7)7m/s 8)4.0s 12)0.82s 14)23m/s[down] 15) pos, neg, neg, pos, pos 17) a)pos, inc, pos b) neg, dec, neg c) pos, dec, neg d) neg, inc, pos 18) velocity, velocity Graphing with Acceleration: 5)12.5m/s2 6/7)parabola, linear 8)a)perhaps at 0 minutes b)0,30,55min c)30-55min d)60m/min,6m/min2 9)50m 10)50m Problem Solving 1) 77.5 m/s2 2) a=0.278m/s2 3) 1.44x105 m 4) 80.s 5)2470m 6)0.87m/s2 [opposite] 7)2.9 s 8)80s 9)1.65s 10)53.3km/h or 14.8m/s 11)115m 12)0.625h, 133km/h 13) 225m 14) 6.3m/s[right] 15)0.46m/s2 16)59m/s[down] 17)5.0m/s2 18)4.0m/s 19)250m 20)0.94m/s 21)2x105 m/s2 22)30.6m/s 23)5.0m/s11. A car starts at rest and after 9.20 seconds is travelling at 25.0 m/s. How far will it have travelled during this trip? Show all work as demonstrated in the lessons. 12. A cross-country race car driver sets out on a 1.00 hour, 100.0 km race. At the halfway marker (50.0 km), the pit crew radios that the car had averaged a speed of only 80.0 km/h. a) How long did it take the driver to travel the first 50.0 km? Show all work as demonstrated in the lessons. b) How fast must the driver drive over the remaining distance in order to average 100.0 km/h for the entire race? Show all work as demonstrated in the lessons. 13. A car starts at rest and is moving at a velocity of 25.0 m/s after 18.0 seconds. How far will it have traveled? Show all work as demonstrated in the lessons. 14. A cat's displacement is 15 meters to the right in 7.0 seconds. If, at the start of the 7.0 seconds, the cat was moving at a velocity of 2.0 m/s left what was its final velocity? Show all work as demonstrated in the lessons.1. In 2019, Sammy Miller drove a rocket powered dragster from rest to 402m (1/4 mile) in a record 3.22s. What acceleration did he experience? 2. If a car is going 100. km/hr as it passes a bystander, then passes another bystander 20.0 seconds later when it's going 120. km/hr, what is the car's average acceleration? Show all work as demonstrated in the lessons. 3. A submarine is travelling at a constant velocity of 20.0 m/s for 2.00 hours. What distance did it travel? Show all work as demonstrated in the lessons. 4. A stationary boat accelerates to 90. km/hr over 1.0 km. What is the time it takes to do this? Show all work as demonstrated in the lessons. 5. A braking train can decelerate at 0.400 m/s2. If the train is travelling at 160. km/hr and needs to plan to stop at a pick-up area. How far in advance does it need to apply the brakes? Show all work as demonstrated in the lessons