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The motion of an object is represented by the velocity-time graph. Find the acceleration of the object during each of the following time intervals.
a) 0.0s to 4.0s
b) 4.0s to 6.0s
c) 6.0s to 12s
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- Professional baseball player Nolan Ryan could pitch a baseball at approximately 160.0 km/h. At that average velocity, how long did it take a ball thrown by Ryan to reach home plate, which is 18.4 m from the pitcher’s mound? Compare this with the average reaction time of a human to a visual stimulus, which is 0.25 s.A race car, from rest, accelerates 9 m/s. How long will it take for the car to cover a distance of 9 6 km (Assume the car travels along a straight line) Select one Oa 13990 meters Ob. 44.2401 meters Oc. 1957 1865 seconds Od 44.2401 seconds5. The x-location and y-location of a particle are described by the following equations, where x and y are in meters and time is in seconds: x = 4e-t y = 2 + 8e -2t a. What is the equation of the particle's path in the x-y plane? b. What are the (x,y) coordinates of the particle at time=0 and as time → ∞o? c. What is the speed of the particle at time=0?
- 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. The following velocity-time graph shows the motion of an object. 20 ...... Time (пain) -20 -40 .g u u Calculate the displacement of the object from 15 to 35 min. Velocity (m/min)At 8:00 AM ship S1 is 20 km due north of ship S2. Ship S1 sails south at a rate of 9 kph and ship S2 sails west at a rate of 12 kph. At what rate is the distance between the two ships changing at 9:20 AM. a. 14.76 kph c. 6.71 kph b. 13.42 kph d. 4.20 kph
- PHYSICS RIVISI An air force jet flying with a speed of 335m/s went past an anti- aircraft gun. How far is the aircraft 5s later when the gun wa- fired. A. 838m B. 3350m C. 670m D. 1675 E. 67m 1. A train has an initial velocity of 44m/s and an acceleration of 4m/s². Its velocity after 10 sec is A. 2m/s B. 4m/s C. 8m/s D 12m/s E. 14m/s 2. 3. If a car starts from rest and moves with a uniform acceleratic of 10m/s² for ten seconds, the distance it covers in the last or second motion is A. 95m B. 100mC. 500m D. 905m E. 30m A body starts form rest and moves with uniform accelerati. 4.A car is travelling with a speed of 90 km/h. This speed in S.I. units is O a. 324.00 m/s O b. 40.23 m/s O c. 25.00 m/s O d. 201.37 m/s(the complete question is in the picture) Which of the following best describes an instantaneous speed?A. A marathon runner stopping midway to take a break.B. A runner finishing a 1-km runaround an oval track in 30 [s]C. A traveler walking for 30 [min]D. A typhoon going southeast with130 [km/h] wind speed.
- fsaul paede A. Differ B. Diffe C. Wh D. W 20. Which of the following objects is moving if the frame of reference is the sun? C. Man riding on the bicycle A. Girl sitting on the chair. B. A vase on the table top. D. All of the above 28 21. In which of the following situations is the displacement zero? A. a bird leaving its nest B. a man walking 2 km north C. a runner stopping at the middle of the race D. a car making a complete revolution around a circular track 22. A bus leaves the station, travels 30 km, then goes back to the station retracing its path. VWhich of the following statements about this situation is correct? A. The total displacement is 60 km and the total distance travelled is 0. B. The total displacement is 0 and the total distance travelled is 30 km. C. The total displacement is 0 and the total distance travelled is 60 km. D. The total displacement is 30 and the total distance travelled is 30 km. 23. The speed of a car travelling on a straight road are shown in the…10. An object's velocity after t seconds is vlt) = 24 - 2t feet per second. A) Assuming the object is a car, how many seconds before its velocity ís 0? B) How far will the car travel till it reaches O velocity? C) How many seconds will the car travel in half the distance found in B? Round to the nearest tenth.A race car, from rest, accelerates 9 m/s2. How long will it take for the car to cover a distance of 9.6 km. (Assume the car travels along a straight line) Select one: O a. 44.2401 meters Ob. 1957.1865 seconds C. 44.2401 seconds O d. 1.3990 meters
