Show all 5 steps for full credit: 1. Given : 2. Formula 3. Substitution with uni
ID: 1580864 • Letter: S
Question
Show all 5 steps for full credit: 1. Given : 2. Formula 3. Substitution with units 4. Calculation 5. Result. Problem 1 An object is moving at 6 m/s along x-direction. An acceleration of 1.5 m/s2 is applied on the object in the y-direction only (i.e., there is no acceleration in the x-direction). Find (a) the x- and the y- component of velocity of the object after 4 seconds, and (b) the magnitude of displacement after that time. Problem 2 From a point on level ground, an object is thrown with an initial velocity of 40 m/s at an angle of 35 with the horizontal (a) What is the maximum height the object will rise? (b) What is the maximum horizontal distance (the range) the object will travel? (c) At what horizontal distance (from the point of projection) the object will attain a height of 10 m? (d) What is the height of the object at a horizontal distance of 60 m? Problem 3 You throw a ball towards a wall with a speed of 25 m/s and at an angle of -40° above the horizontal. The wall is at a distance of 22 m from the release point of the ball. (a) How far above the release point does the ball hit the wall? (b) What are the (0) horizontal and (i) vertical components of its velocity as it hits the wall? Problem 4 A boy whirls a stone in a horizontal circle of radius 0.75 m and at a height of 1.5 m above level ground The string breaks, and the stone flies off horizontally and strikes the ground after traveling a horizonta distance of 4 m. What is the magnitude of centripetal acceleration of the stone during the circula motion?Explanation / Answer
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1.
final X and Y Components of velocities in x and y direction is
Vfx=Vox =6 m/s
Vfy =Voy+at =0+1.5*4
Vfy =6 m/s
b)
Horizontal distance travelled
X=Vfxt =6*4=24 m