Exercises for Chapter 1 Kinematics 1. An impulsive retarding force of 3 seconds duration acts on a particle which is moving with a forward velocity of 60 m/s. The oscilloscope record of the deceleration is shown. Determine the approximate velocity of the particle at t = 9 s. [answer: -58 m/s] 2. A car can decelerate at 0.8 ‘g’ on a certain road. Find the total emergency stopping distance measured from the point where the driver first sights the danger for a speed of 100 km/hr. The time taken for
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1. A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at an average speed of 40 km/h. The average speed of the car for this 80 km trip is: A) 40 km/h B) 45 km/h C) 48 km/h D) 53 km/h E) 80 km/h 30’+60’ = 90’=5400s=1.5h 40km+40km=80km vavg= 80000m/5400s=13.168724279835390946502057613169 m/s = 48 km/h 2. The coordinate of an object is given as a function of time by x = 7t – 3t2‚ where x is in meters and t is in seconds. Its average velocity
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Worksheet 1. Which one of the following contains only vector quantities? A. mass‚ time B. force‚ velocity C. time‚ momentum D. acceleration‚ speed 2. An airplane heads due north with an airspeed of 75 m/s. The wind is blowing due west at 18 m/s. What is the airplane’s speed relative to the ground? A. 57 m/s B. 73 m/s C. 77 m/s D. 93 m/s 3. Two velocity vectors‚ v1 and v2 are shown. Which of the following best represents the resultant of the addition of the two velocity vectors?
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1. Two ships P and Q are moving along straight lines with constant velocities. Initially P is at a point O and the position vector of Q relative to O is (6i + 12j) km‚ where i and j are unit vectors directed due east and due north respectively. The ship P is moving with velocity 10j km h–1 and Q is moving with velocity (−8i + 6j) km h−1. At time t hours the position vectors of P and Q relative to O are p km and q km respectively. (a) (b) (c) Find p and q in terms of t. (3) Calculate the distance
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for 2000cc mid-size category between Japan cars and Germany cars The line graph shows the information about the time taken for 2000cc mid-size cars from Japan and Germany cars to reach 100km/h. The Japanese cars acceleration was a bit slower than the Germany cars with the same engine capacity. The Honda Accord was clocked at 10.7 seconds when it reached from 0-100km/h. The second car was the Toyota Camry‚ scored a 12.5 second for its trial. The next car was the Nissan Teana that achieved a time
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Acceleration Worksheet 3 Worked Example A cheetah running at 20 m s−1 slows down as it approaches a stream. Within 3.0s‚ its speed has reduced to 2 m s−1. Calculate the average acceleration of the cheetah. Solve the following: 1. A sports car‚ accelerating from rest‚ was timed over 400 m and was found to reach a speed of 120 km h−1 in 18.0 s. a. What was the average speed of the car in m s−1? b. Calculate the average acceleration of the car in km h−1 s−1. c. What was
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Final Exam Review Questions Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. In the diagram‚ the amplitude of the wave is shown by: a. c c. b b. d d. a ____ 2. In the diagram‚ the crest of the wave is shown by: a. c c. b b. d d. a ____ 3. In the diagram‚ the trough of the wave is shown by: a. c c. b b. d d. a ____ 4. In the diagram‚ the wavelength is shown by: a. c c. b b. d d.
Free Light Refraction Total internal reflection
Since the 1st car was invited‚ people have looked for more ways to make the cars more creative and more beautiful. The Model T only came in black but when it was built in assembly lines. Before that it was blue. Cars have evolved since and there is more technology inside of them with new stereos‚ monitors‚ and lights. It’s really up to the individual on how they want to customize their own car. With many styles they might have in mind with flames or maybe just one or multiple colors all together
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Why did the drastic change in American cars between the 50’s and the 60’s come about? INTRO Brit Spears offered the following reflection on the significance of the 1964 Ford Mustang in Wired magazine“The two Ford execs saw a vast market literally rolling before their eyes‚ and‚ according to legend‚ the notion of a sports car with a back seat was one of those ‘ah-hah’ moments.”[i]The 1964 Ford Mustang was a ground breaking design in automotive
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CHAPTER 2: Kinematics of linear motion (5 hours) 1 2.0 Kinematics of Linear motion is defined as the studies of motion of an objects without considering the effects that produce the motion. There are two types of motion: Linear or straight line motion (1-D) with constant (uniform) velocity with constant (uniform) acceleration‚ e.g. free fall motion Projectile motion (2-D) x-component (horizontal) y-component (vertical) 2 Learning Outcome: 2.1 Linear Motion (2 hour)
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