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 the driver to identify the hazard, decide on a course of action, and apply the brakes is 0.75 s. [Answer: 70 m] 3. An underground train on the Mass Transit Railway moves away from a station with an initial acceleration of 0.9 m/s2. The acceleration decreases uniformly with time until after half a minute it is 0.3 m/s2. Calculate the speed reached and the distance travelled during this time. [Answer: 18 m/s, 315 m] 4. The magnitude of the acceleration and deceleration of an express lift is limited to 0.4 ‘g’, and the maximum vertical speed is 400 m/min. Calculate the minimum time required for the lift to go from rest at the 10th floor to a stop at the 30th floor, a distance of 100 m. [Answer: 16.7 s] 5. A cam rotates at 500 rev/min and imparts ‘parabolic’ motion (i.e. Constant acceleration and deceleration) to a reciprocating follower. The total lift of the follower is 20 mm and this takes place during 90 degrees of cam rotation.

If the acceleration and deceleration are a1 and a2 respectively, determine vmax, a1 and a2 for the following conditions: (1) a1 = 1.5 a2 and (2) a1 = a2. [answer: 111.1 m/s2, 74.1 m/s2, 1.33 m/s 88.9 m/s2, 88.9 m/s2, 1.33 m/s] 6. A circular cam of radius R rotates at rad/s and moves a flat-ended follower up and down. The eccentricity of the cam is d (i.e. distance from axis of rotation to centre of circle). Derive expressions for the follower velocity and acceleration. If the speed is 2000 rev/min, R = 20mm and d = 5 mm, determine the velocity...

...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...

...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 over the interval from t = 0 to t = 2 s is:
A) 5 m/s
B) –5 m/s
C) 11 m/s
D) –11 m/s
E) –14.5 m/s...

... |
|Rebuild the company’s image with continued advertising such as |Previously tarnished reputation and image |
|the successful M & S food adverts |Competitor product ranges which directly compete with M & S food |
|Focus on core market |such as Tesco finest...

...
a.
c.
b.
d.
____ 7. If the period of a certain wave (wavelength = 4.5 m) is 2 seconds, what is the speed of the wave?
a.
0.44 m/s
c.
9.0 m/s
b.
1.1 m/s
d.
2.3 m/s
____ 8. Tapping the surface of a pan of water generates 17.5 waves per second. If the wavelength of each wave is 45 cm, what is the speed of the waves?
a.
7.9...

...various channel intermediaries and connect theory with practice. There would be three components of the SDM project, 1. Part A- Involving understanding of distribution channel 2. Part B- Sales Force Management Issues 3. Part C- Interaction with a senior S&D executive within the company to investigate a specific issue of concern. The weightage of Parts A & B is 20% (together) and Part C is 5% respectively. All the components are elaborated below and the project report is expected...

...homeless, parents returning to work, students who are the first in their families to aim for higher education and school students.
The company Marks & Spencer (M&S) is one of the UK's leading retailers of clothing, food, home products and financial services. Ten million people shop each week in over 375 M&S stores in the UK. In addition M&S has 155 stores managed under franchise in 28 territories, mostly in...

...BACKGROUND
Marks & Spencer ( M&S) , popularly known as Marks & Sparks , one of the leading retailers in UK began internationalizing in early 70s with formal store based operations in Canada and so on and so forth. However , On 29 March 2001, Marks and Spencer (M&S) announced that it was to sell its Brooks Brothers clothing chain (USA and Japan) and Kings supermarkets (USA) businesses, and turn its company-owned stores...

...2029820G Mysticism and Spirituality Essay
Q2: Why are the concepts of tashbih and tanzih so important within the Sufi tradition?
Sufism is essentially Islamic mysticism. It has a long history and involves different forms and orders. However, the main focus is to develop the individuals inner Spirituality and try to stay on the path of truth and love. Spirituality is essentially just a person who engages with close worship of God and abides by him. Mysticism is a way that the...

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