Question

In: Physics

You drop a ball from a window on an upper floor of a building and it...

You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed vf. You now repeat the drop, but you have a friend on the street below throw another ball upward at speed vf exactly at the same time that you drop your ball from the window. The two balls are initially separated by 57.6 m.

(a) At what time do they pass each other?
s

(b) At what location do they pass each other relative to the window?
m

Solutions

Expert Solution

h = 57.6 m

a)

The first ball is dropped from rest from the height h of the window.

the y-coordinates at time t during the fl ights are given by

the speed of second ball as it reaches the ground

the y-coordinates at time t during the fl ights are given by

When the two balls pass,

b)

When the balls meet,

Thus, the distance below the window where this event occurs is


Related Solutions

1) A ball is tossed from an upper-story window of a building. The ball is given...
1) A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8..00 m/s at an angle of 20.0 below the horizontal. It strikes the ground 5 .00 s later. A) How far horizontally from the base of the building does the ball strike the ground? B) Find the height from which the ball was thrown. C) How long does it take the ball to reach a point 10.0 m below the...
From the window of a building, a ball is tossed from a height y0 above the...
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 7.90 m/s and angle of 19.0° below the horizontal. It strikes the ground 6.00 s later. (a) If the base of the building is taken to be the origin of the coordinates, with upward the positive y-direction, what are the initial coordinates of the ball? (Use the following as necessary: y0. Assume SI units. Do not substitute numerical...
A ball is thrown upward from the ground. You observe the ball through a window on...
A ball is thrown upward from the ground. You observe the ball through a window on its way up, and notice it was visible for 2 seconds while it travels from the bottom of the window to the top, which is a length of 43.42 metres. a) How much time does it take for the ball to be seen again (in seconds)? b) How far above top of window will the ball reach (in metres)?
While out on your 3rd floor apartment balcony, you notice someone drop a 8.0 kg ball...
While out on your 3rd floor apartment balcony, you notice someone drop a 8.0 kg ball from rest from the roof of the 5 story building across the street. You know that the two identical buildings are 34 m apart, and have floors that are 5.0 m tall. The first floor is at ground level. m = 8.0 kg d = 34 m h = 5.0 (a) determine the magnitude of the angular momentum of the ball, in kilogram meters...
You throw a hammer from a second floor window. Check all that apply for the duration...
You throw a hammer from a second floor window. Check all that apply for the duration of its flight. Neglect air resistance. Group of answer choices The angular momentum of the hammer is conserved The linear momentum of the hammer is conserved The total mechanical energy of the hammer is conserved Every point of the hammer is flying on a parabola There is one point of the hammer that is flying on a parabola There are no points that fly...
Consider a cricket ball and a tennis ball (each with the same mass). If you drop...
Consider a cricket ball and a tennis ball (each with the same mass). If you drop the tennis ball and cricket ball from the same height (ignore air resistance), explain why it hurts more when the cricket ball lands on your foot compared to the tennis ball.
Out of idle speculation, you drop a metal ball from a height of 2 yards onto...
Out of idle speculation, you drop a metal ball from a height of 2 yards onto a sample cute from a plastic sheet. (You are an old-fashioned engineer and can have no truck with units such as meters.) You observe that the plastic sheet punctures in a ductile fashion, leaving a hole roughly the size of the ball. You find that if the same metal ball is dropped onto another sample of the same plastic sheet from a height of...
The elevator starts from rest at the first floor of the building and comes to a...
The elevator starts from rest at the first floor of the building and comes to a complete stop at the 6th floor. It can accelerate at 6 ft/s2 and then decelerate at 2 ft/s2 Determine the shortest time is takes to reach the 6th floor, which is 60 ft above the ground. Draw the v?t and s?t graphs for the motion of the elevator.
A ball is dropped from a building of height 100m. At the same time, another ball...
A ball is dropped from a building of height 100m. At the same time, another ball is then thrown vertically up from the ground with a velocity V0.  They meet each other at the middle. What is the speed V0 of the ball thrown vertically up? a) 44.3m/s b)9.8m/s c) 31.3m/s d)19.6 m/s e) 98.0m/s
A quarter is dropped from rest from the fifth floor of a very tall building. The...
A quarter is dropped from rest from the fifth floor of a very tall building. The speed of the quarter is v just before striking the ground. From what floor would the quarter have to be dropped from rest for the speed just before striking the ground to be approximately 2v? Assume equally spaced floors and ignore all air resistance effects to determine your answer. please focus on showing the process to achieve the answer, thank you
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT