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- If you divide the total distance traveled on a car trip (as determined by the odometer) by the time for the trip, are you calculating the average speed or the magnitude of the average velocity? Under what circumstances are these two quantities the same?Find the following for path A in Figure 3.54: (a) the total distance traveled, and (b) the magnitude and direction of the displacement from start to finish.H.W 1: find the displacement for a Car movesfromA to B and then to Cand goes back agene to A as in patron below ? 3m 3m A B 6m
- H.W 1: find the displacement for a Car moves from A to B and then to Cand goes back agene to A as in patron below ? 3m 3m 6m4. A particle start from rest and moves in straight line with an acceleration of a- (2t-6) m/s, where t is in seconds. What is the particles velocity when t-és (V(6) - Om/s ), and what is its position when t- 11s?(80.7 m)Physics 30S Science & Technology 2240 Grant Ave. Winnipeg. MB R2C IL6 Shaflesbury High School Motion: Speed/Velocity & Acceleration Ad V = At a = Average Velocity, 1. A man jogs 5.0 km (5000 m) in 27 minutes. a) What is the time interval (At) in seconds? b) Calculate his average speed in metres per second (m/s). Average Acceleration, At 2. An object has a position of 13 metres west. 5.0 seconds later it's at 7 metres east. a) What was the initial position? b) What was the change of position or displacement (Ad)? c) What was the average velocity? 3. A world class sprinter runs 100.0 m in 8.90 s. What was his average speed? 4. A hiker gets lost in a forest. He walks half-way around a circle with a radius of 2.1 km in 2.0 hours. a) What distance did he walk? b) What was his average speed? c) What was his displacement? d) What was his average velocity? WE S C-2rr 5. A car has an average highway speed of 90 km/h or 25 m/s. At this speed; how long will it take to drive to Kenora which is 190…
- 1-10. A gardener walks in a flower garden as illustrated in the figure below. a.)What distance does the gardener travel? b.)What is the gardener's displacement? Distance (mctors)Context The position of a peculiar fish as a function of time is given by the following equation. Time is in seconds, position is in meters, and the positive direction is to the right. x(t) = 2t3 + 12t2 - 72t The fish's position, velocity, and acceleration functions are x = 2t3 + 12t2 - 72t, v = 6t2 + 24t - 72, and a = 12t + 24. Question: When, if ever, is the fish at rest? Drag the appropriate label(s) to the correct location(s) on the number line. Remember that it is the circle in the upper left corner of the label that must be in the correct place. Drag the period (.) to denote a single time; for example, t=0. Drag the left bracket ([) to denote the lower end of a range; for example, t>0. Drag the right bracket (]) to denote the upper end of a range; for example, t<0. Drag "none" anywhere near the line if the fish is never at rest. You may place as many of each symbol on the line as needed. See image attached:Vhich of the following graphs indicates positive velocity? a) b) time time c) d) Time time In the following velocity vs. time graph, what is the displacement between 10 and 15 seconds? velocity (m/min) 80 60 40 time (min) - 20 NO -40 20 position. velocity + position
- s. Calculate average velocity and speed of the driver. 4. Using V-t graph derive equations of motion (i) v=u + at (ii) s=ut+½ at? 5. A driver of a car travelling at 54km/h applies the brakes decelerates uniformly and, the car stops in 5seconds. Another driver going at 45km/h applies his brakes slower and stopped in 10 seconds. On the same graph paper, plot the velocity -time graph for two cars. Which of the two cars travelled farther after brakes were applied? 6. A truck driver driving on a straight highway with a velocity of 90km/h suddenly notices a child on the (iii) v²=u²+2as. highway at 500m distance. If his response time is 3s then calculate the retardation which he should apply on brakes to just avoid the accident. 7. A stone is thrown vertically upward direction with a velocity of 39.2m/s. If the acceleration of the stone during its motion is 9.8 ms in the downward direction , what will be the height attained by the stone and how much time will it take to reach there? 8.…An ambulance is not moving in front of a redtraffic light. As the lightturns green, a truck goespast at a constant speed of 20. m/s. At the samemoment, the ambulance begins to accelerate at 2.0m/s^2; when it reaches 35.m/s the ambulancecontinues at that speed.a) The ambulance willpass the truck after how many secondsb) Find their distance from the traffic light at this timeShort computation The position of an object as a function of time is given by x(t) = bt3 - ct2 + et - f, where b = 2.1 m/s³, c = 3.2 m/s², e = 7 m/s and f = 6.8 m. Find the average acceleration over the first 1.21 seconds. davg = Remember to include a "-" if the average acceleration is negative. Do not include a "+" for a positive value. m/s² Report your numerical answer below, assuming three significant figures. D