An experiment is conducted with two cars. The cars' motion is plotted in a position vs. time graph and their motion can be expressed with the following functions... xCar 1(t) = (-7.15 m/s)xt + 14.3 m xCar 2(t) = (12.4 m/s) xt - 138 m What happens at the intersection of the two lines? Calculate EXACTLY where and when that intersection happens. (Your answer must show proper significant figures)?

Hi I am in phyiscs I and it has the problem a runner ran the marathon (approx. 26.1) in 2 hours and 57 min. What was the average speed of the runner in m/s? I understand that I would have to divide the total distance by the total time, but I'm not sure how they changed the miles to meters. Please break it down so I can understand. I tried to solve it how you guys did it but I keep getting another answer. Thank you!

Answer the following question.

During 55 successive 1.001.00 min intervals, a runner moves at the following constant speeds: 0.4000.400 km/min, 0.2000.200 km/min, 0.1100.110 km/min, 0.1100.110 km/min, and 0.3600.360 km/min. a.) Find the total distance traveled. b.) Find the average speed.

Part 1: A motorist traveling at 17 m per s encounters a deer in the road 48 m ahead. If the maximum acceleration the vehicle's brakes are capable of is -5 m per s2 what is the maximum reaction time of the motorist that will allow her or him to avoid hitting the deer? Answer in units of s. Part 2: If his or her reaction time is 1.29353s, how fast will (s) he be traveling when(s)he reaches the deer? Answer in units of m per s.

pls. answer with FBD pls. A car accelerates uniformly from zero to 10m/s2 in 6 seconds starting from rest. During the next 3 seconds, the car decelerates at a constant rate of 2m/s2. Compute the total distance traveled after 9 seconds.

ven city Time (s) 0.5 0.0 -0.5 0.2 0.4 0.6 0.8 1.0 1.2 1.4 -1.0+ E-1.5+ 6. Interpreting Data Figure 1-17 is a posi- tion-time graph of the motion of a basketball thrown straight up. Use the graph to sketch the path of the basketball and t o sketch a velocity- time graph of the basketball's motion. a. Is the velocity of the basketball constant? b. Is the acceleration of the basketball constant? c. What is the initial velocity of the basketball? -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 -5.5 Figure 1-17 ter 1 Position (m)

A student drops a small black sphere alongside a vertical scale marked in centimetres. A number of flash photographs of the sphere are taken at 0.10s intervals: 9. .. This diagram is shown sideways- the first black dot is at 0 cm and the next at 4 cm. Figure 1.19 The first photograph is taken with the sphere at the top at time t = 0s. Explain how Figure 1.19 shows that the sphere reaches a constant speed. Determine the constant speed reached by the sphere. Determine the distance that the sphere has fallen when t 0.80 s. In a real photograph, each image of the sphere appears slightly blurred because each flash is not instantaneous and takes a time b of 0.0010s. Determine the absolute uncertainty that this gives in the position of each position of the black sphere when it is travelling at the final constant speed. Saggest whether this should be observable on the diagram. - 120 -130

Tutorial Exercise A soccer ball is kicked from 2 feet above the ground. The height, h, in feet of the ball after t seconds is given by the function h = -16t2 + 64t + 2. (a) Graph the function. (b) At what time(s) is the height of the ball 50 feet? Step 1 Create a table of values for the function. [AlgUns.0386] The height function is h = -16t2 + 64t + 2. Create a table of values for the ordered pairs of the form (t, h). th = -16t² + 64t + 2 %3D 1 2 4 Submit Skip (you cannot come back)

A car starts moving at time t=0 and goes faster and faster. Its velocity is shown in the following table. t (seconds) 0 3 6 9 12 Velocity (ft/sec) 0 8 27 43 74 A. Estimate how far the car traveled during the first 12 seconds using the left-hand sums with 4 subdivisions. Answer: B. Now estimate how far the car traveled during the first 12 seconds using the right-hand sums with four subdivisions. Answer: