Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
A particle moves along a horizontal path with a velocity of v = (3t2 6t) mis, where t is the time in seconds. If it is initially located at the origin 0, determine the distance traveled in 3.5 s, and
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
The vs graph describing the motion of a motorcycle is shown in Fig. 1215a. Construct the as graph of the motion and determine the time needed for the motorcycle to reach the position s = 400 ft. SO
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
A small projectile is fired vertically downward into a fluid medium with an initial velocity of 60 m/s.
Due to the drag resistance of the fluid the projectile experiences a deceleration of a = (0.4v
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
At any instant the horizontal position of the weather balloon in Fig. 121Sa is defined by x = (St) ft, where t is in seconds. If the equation of the path is y = x2/10, determine the magnitude and dir
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
The car in Fig. 122 moves in a straight line such that for a short time its velocity is defined by
v = (3P + 2t) ft/s, where t is in seconds. Determine its position and acceleration when t = 3 s. Wh
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
For a short time, the path of the plane in Fig. 1219a is described by y = (0.00lx2) m. If the plane is rising with a constant velocity of 10 mjs, determine the magnitudes of the velocity and accelera
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
A bicycle moves along a straight road such that its posItIon is described by the graph shown in Fig. 1213a. Construct the vt and at graphs for 0 :; t :; 30 s. s (ft)
500 f
100
. =1'0 3' 0t
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
A metallic particle is subjected to the influence of a magnetic field as it travels downward through a fluid that extends from plate A to plate B, Fig. 125. If the particle is released from rest at t
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
During a test a rocket travels upward at 75 mis, and when it is 40 m from the ground its engine fails.
Determine the maximum height SB reached by the rocket and its speed just before it hits the grou
Karachi Institute of Economics & Technology, Karachi (Main Campus)
Engineering Mechanics
CEO 8

Fall 2016
The car in Fig. 1214a starts from rest and travels along a straight track such that it accelerates at 10 m/s2 for 10 s, and then decelerates at 2 m/s2. Draw the vt and st graphs and determine the t