A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 1.00 s later. Ignore air resistance, (a) If the height of the building is 20.0 m. what must the initial speed of the first ball be if both are to hit the ground at the same lime? On the same graph, sketch the positions of both balls as a function of time, measured from when the first ball is thrown. Consider the same situation, but now let the initial speed up of the first ball be given and treat the height h of the building as an unknown, (b) What must the height of the building be for both balls to reach the ground at the same time if (i) υ 0 is 6.0 m/s and (ii) υ 0 is 9.5 m/s? (c) If υ 0 is greater than some value υ max , no value of h exists that allows both balls to hit the ground at the same time. Solve for υ max . The value υ max has a simple physical interpretation. What is it? (d) If υ 0 is less than some value υ min , no value of h exists that allows both balls to hit the ground at the same time. Solve for υ min . The value υ min also has a simple physical interpretation. What is it?
A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 1.00 s later. Ignore air resistance, (a) If the height of the building is 20.0 m. what must the initial speed of the first ball be if both are to hit the ground at the same lime? On the same graph, sketch the positions of both balls as a function of time, measured from when the first ball is thrown. Consider the same situation, but now let the initial speed up of the first ball be given and treat the height h of the building as an unknown, (b) What must the height of the building be for both balls to reach the ground at the same time if (i) υ 0 is 6.0 m/s and (ii) υ 0 is 9.5 m/s? (c) If υ 0 is greater than some value υ max , no value of h exists that allows both balls to hit the ground at the same time. Solve for υ max . The value υ max has a simple physical interpretation. What is it? (d) If υ 0 is less than some value υ min , no value of h exists that allows both balls to hit the ground at the same time. Solve for υ min . The value υ min also has a simple physical interpretation. What is it?
A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 1.00 s later. Ignore air resistance, (a) If the height of the building is 20.0 m. what must the initial speed of the first ball be if both are to hit the ground at the same lime? On the same graph, sketch the positions of both balls as a function of time, measured from when the first ball is thrown. Consider the same situation, but now let the initial speed up of the first ball be given and treat the height h of the building as an unknown, (b) What must the height of the building be for both balls to reach the ground at the same time if (i) υ0 is 6.0 m/s and (ii) υ0 is 9.5 m/s? (c) If υ0 is greater than some value υmax, no value of h exists that allows both balls to hit the ground at the same time. Solve for υmax. The value υmax has a simple physical interpretation. What is it? (d) If υ0 is less than some value υmin, no value of h exists that allows both balls to hit the ground at the same time. Solve for υmin. The value υmin also has a simple physical interpretation. What is it?
Solve and answer the question correctly please. Thank you!!
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The position of a particle is described by r = (300e 0.5t) mm and 0 = (0.3t²) rad,
where t is in seconds.
Part A
Determine the magnitude of the particle's velocity at the instant t = 1.5 s.
Express your answer to three significant figures and include the appropriate units.
v =
Value
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Part B
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Units
Determine the magnitude of the particle's acceleration at the instant t = 1.5 s.
Express your answer to three significant figures and include the appropriate units.
a =
Value
A
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Units
Chapter 2 Solutions
University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
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