or the rate 17. What is the speed of a truck that travels 10 km in 10 minutes? o
ID: 2039599 • Letter: O
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or the rate 17. What is the speed of a truck that travels 10 km in 10 minutes? on c. 0.6 m/s d. 60 m/s a. 167 m/s b. 1 m/s 18. Find the velocity of the car i it travels along the circular path wit r 300f, angular velocity (o) 0.5 rad/s and angular acceleration (a)0.2 rad's a. 75 ftls b. 150 ft/s 60 fts d. 120 ft/s stone's 19. A stone is thrown vertically upward with a speed of 23 m/s. How long is required to reach a height of 10 meters if the stone is already moving downward? a. 0.5 s C. pole. If the ocity before 20. Find the acceleration of the car if it travels along the circular path with r 300ft, angular velocity () 0.5 rad's and angular acceleration (a) 0.2 rad/s? t 75 kph a. 135 ft/s d. 96 f/s b. 60 fus? 21. Linda drives from her house to office which is 34 miles apart at a constant velocity of 86 mph, going back, she can only drive at a constant velocity of 49 mph. What is the average velocity of the trip? uck? c. 62.4 mph a. 67.5 mpth b. 53.1 mph which the r lunch break cause of motion. 22. The study of the geometry of motion. It is used to relate displacement, velocity, acceleration, and time without reference to the c. Kinetics d. Kinematics a. namics b. Mechanics 23. Two stones are thrown vertically up at the same time. The first stone is thrown with an initial velocity of 11 m/s from a 12h floor balcony of a building and hits the ground after 4.5 seconds. With what initial velocity should the second stone be thrown from a 4h floor balcony so ed car starts that it hits the ground at the same time as the first stone? (Assume all floors are of same height) a. 42.8 m/s b. 21.4 m/s c. 18.4 m/s d. 36.8 m/s hat is the 24. Positon, velocity, and acceleration of a particle as it moves along a straight line. a. Relative Motion ed car tangential at is the c. Curvilinear Motion d. Angular Motion b. Rectilinear Motion 25.If a man can walk 5km in 1 hour and his wife can walk 4km in1 hour, how far from the man's initial position will hey meet if they begin walking at the same time at opposite ends of a 12km road? a. 6.67 km c. 6.0 km d. 5.33 knm ed car b. 7.5 km angential 26. If a man can walk 5km in 1 hour and his wife can walk 4km in 1 at is the hour, how many minutes will it take them to meet if they begin walking at the same time at opposite ends of a 12km road? C. 80 27. The location of an object in a coordinate system. a. Distance b. Displacement C. d. Velocity ds to hit the 28. The distance of an object from a reference point. a. Position b. c. Acceleration d. Velocity 29. Find the direction of the resultant of the following vectors: Vi25 m/s, 30 N of E: V2 10 mis, NW and Vs 15 m/s, due S c. 17.4° E of N d. 47.1° E of N a. 17.4° N of E b. 47.1° N of E 30. A boat whose speed in still water is 1.7 m/s, must cross a 260- meter wide river and arrive at a point 110 meters upstream from where the boat starts. To do so, the driver must head the boat at a 45 upstream angle. What is the speed of the river's current? of W nagnitude a. 0.69 m/s b. 0.96 m/s c. 1.25 m/s d. 1.44 m/sExplanation / Answer
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17.
Speed
V=d/t =(10*103)/(10*60)
V=16.7 m/s
18.
Velocity of the car
V=RW=300*0.5
V=150 ft/s
19.
From
Y=Yo+Vot-(1/2)gt2
10=23t-(1/2)*9.81*t2
4.905t2-23t+10=0
t=4.2 s
20.
acceleration of the car is
a=r*alpha =300*0.2
a=60 ft/s2
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