1. stone is thrown from the bottom of a building upward at an angle of 60.0° to the horizontal with an initial speed ofv=10.0 m/s as shown in figure. What is the magnitude and direction of the stone's velocity just before it strikes the ground? y 600 2. Given F1 =(12.0 i + 10.0 j)N vector ; vector F2 has x and y components of -25 N and 30 N respectively. If F1- 5F2-4F= 0, what are the components of F? 3. A car travels along a straight line at a constant speed of 72.0 km/h for a distance x and then another distance 2x in the same direction at another constant speed of 36.0 km/h. (a) What is the average speed and average velocity for this trip? 4. At t = 0, one car is rolling on a straight-line initial position 10.0 m, initial velocity 5 m/s, and constant acceleration 3.0 m/s². At the same moment, another car is set rolling on an adjacent track with initial position 50 m, initial velocity 72 km/hour, and zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (d) What are their locations at that time?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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1. stone is thrown from the bottom of a building upward at an angle of 60.0° to the horizontal with an
initial speed ofv=10.0 m/s as shown in figure.
What is the magnitude and direction of the stone's velocity just before it strikes the ground?
y
600
2. Given F1 =(12.0 i + 10.0 j)N vector ; vector F2 has x and y components of -25 N and 30 N
respectively. If F1- 5F2-4F= 0, what are the components of F?
3. A car travels along a straight line at a constant speed of 72.0 km/h for a distance x and then another
distance 2x in the same direction at another constant speed of 36.0 km/h.
(a) What is the average speed and average velocity for this trip?
4. At t = 0, one car is rolling on a straight-line initial position 10.0 m, initial velocity 5 m/s, and constant
acceleration 3.0 m/s². At the same moment, another car is set rolling on an adjacent track with initial position
50 m, initial velocity 72 km/hour, and zero acceleration.
(a) At what time, if any, do the two cars have equal speeds?
(d) What are their locations at that time?
Transcribed Image Text:1. stone is thrown from the bottom of a building upward at an angle of 60.0° to the horizontal with an initial speed ofv=10.0 m/s as shown in figure. What is the magnitude and direction of the stone's velocity just before it strikes the ground? y 600 2. Given F1 =(12.0 i + 10.0 j)N vector ; vector F2 has x and y components of -25 N and 30 N respectively. If F1- 5F2-4F= 0, what are the components of F? 3. A car travels along a straight line at a constant speed of 72.0 km/h for a distance x and then another distance 2x in the same direction at another constant speed of 36.0 km/h. (a) What is the average speed and average velocity for this trip? 4. At t = 0, one car is rolling on a straight-line initial position 10.0 m, initial velocity 5 m/s, and constant acceleration 3.0 m/s². At the same moment, another car is set rolling on an adjacent track with initial position 50 m, initial velocity 72 km/hour, and zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (d) What are their locations at that time?
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