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- 2A car travels at 35.0 mph for 0.5 hours, at 65.0 mph for the next 2.5 hours and finally at 80.0 mph for 1.5 hours. The car's average velocity for the entire journey was around 80 mph O None of these are correct 180 mph 60 mph 67 mphThe distance traveled (approximate) in the first fifty seconds. v (m/s) 40 30 20 10 0 0 10 20 30 40 50 g C 60 70 t (s) 80 90 100 110 120
- (2) Two cars are 150 kilometres apart and travelling toward each other. One car is movng at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet? A) 2.5 h B) 2.0 h C) 1.75 h D) 1.5 h E) 1.25 h 40 156kmQuestion 5 You measure the velocity of falling object at several times given in the table below. Time (s) Velocity (m/s) 0.00 0.08 0.10 1.05 0.20 2.05 0.30 3.03 0.40 3.84 0.50 4.98 0.60 5.78 0.70 6.88 0.80 7.84 0.90 8.73 1.00 9.89 The acceleration is the slope of the fit line. Use the Data Analysis ToolPak in Excel (or any other linear regression tool) to determine the acceleration and its uncertainty from the slope of the fit line and its standard error. O 19.71 + 0.07) m/s? O 9.81 z 0.07) m/s? O0.70.1) m/s (9.75 + 0.04) m/s? (9.80 + 0.01) m/sA car is initially at rest on a straight road. The graph shows the acceleration of the car along that road as a function of time. Me 2 1 " 11 4 4 a 4 1 4 7 . And What is the speed of the car at t-? s? 15 11 12 13 14 Tries 0/99 How much distance does the car cover in the first 9 seconds? Tries 0/99 What is the speed of the car at t-14-s? Tries 0/99 Determine the distance covered by the car between t-11s and t-13 s? Tries 0/99