(a) At the highest point, velocity is always zero. (Interesting fact - objects stop at their highest point for some time. During this time, they are weightless. This is how ZERO G plane works).
There will only be acceleration in downward direction which is equal to 9.8 m/s2.
------------------------------------------------------------------------------------------------------
(b) v2 - u2 = 2ah
we know
v = 0 at highest point.
- u2 = 2ah
-14.72 = 2*(-9.8) h
h = 11.025 m ( above the roof of the building)
---------------------------------------------------------------------------------------------------------------
(c) v = u + at
t = u /a
t = 14.7 / 9.8
t = 1.5 sec
-------------------------------------------------------------------------------------
(d) Now, for this assume that the velocity is initial velocity at highest point
here, height is 11.025 + 111.5 = 122.525 m
so,
v = 2gh
v = 49 m/s
--------------------------------------------------------------------------------
(e) This is the total time
we know time to reach max height from the top of building.
so,
time to fall to ground from max height.
111.5 = 0.5at2
t = 4.77 sec
so, total time in air
T = 6.27 sec
Please help me to solve this physics problem 2. A baseball is thrown straight up with...
Please help me 2. A baseball is thrown straight up with an initial speed of 14.7 m/s from the roof of a building Hp 111.5 m high. (Use the coordinate system shown at the right. Assume the baseball is thrown upward from the edge of the roof, so that it can travel back down to the ground without colliding with the roof. Ignore air resistance. Be sure to include the correct sign and units with any numerical answer. Use g...
Please help me on Physic Test 1 September 21, 2018 PHYS 140-1 Do all work in the examination book. 1. Consider the vectors a-i -k and b-j+k a. Find the magnitudes a and b of these vectors. Show work. (4 points) b. Use the dot product to find the angle φ between these vectors. Show work. (6 points) c. Find the cross product ā xb in i, j, k notation by using a determinant. Show work. (8 points) d. Find...
A baseball thrown at an angle of 55.0∘ above the horizontal strikes a building 16.0 m away at a point 8.00 m above the point from which it is thrown. Ignore air resistance. a) Find the magnitude of the initial velocity of the baseball (the velocity with which the baseball is thrown). b) Find the magnitude of the velocity of the baseball just before it strikes the building. c) Find the direction of the velocity of the baseball just before...
A baseball thrown at an angle of 65.0° above the horizontal strikes a building 18.0 m away at a point 5.00 m above the point from which it is thrown. Ignore air resistance. Find the magnitude of the initial velocity of the baseball (the velocity with which the baseball is thrown) Find the magnitude of the velocity of the baseball just before it strikes the building.
A baseball thrown at an angle of 65.0° above the horizontal strikes a building 18.0 m away at a point 5.00 m above the point from which it is thrown. Ignore air resistance. Part AFind the magnitude of the initial velocity of the baseball (the velocity with which the baseball is thrown) Part B Find the magnitude of the velocity of the baseball just before it strikes the building. m/s Part C Find the direction of the velocity of the baseball just before it strikes...
A baseball thrown at an angle of 65.0 ∘ above the horizontal strikes a building 18.0 m away at a point 5.00 m above the point from which it is thrown. Ignore air resistance. Find the direction of the velocity of the baseball just before it strikes the building.
A baseball is thrown from the roof of a 30.0-m-tall building with an initial velocity of magnitude 17.0 m/s and directed at an angle of 53.1° above the horizontal. (a) What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. m/s (b) What is the answer for part (a) if the initial velocity is at an angle 53.1° below the horizontal? m/s
A baseball thrown at an angle of 55.0 above the horizontal strikes a building 17.0 m away at a point 8.00m above the point from which it is thrown. Ignore air resistance. A) Find the magnitude of the initial velocity of the baseball (the velocity with which the baseball is thrown). Express your answer in meters per second. B) Find the magnitude of the velocity of the baseball just before it strikes the building. Express your answer in meters per...
A baseball is thrown from the roof of 20.6 m -tall building with an initial velocity of magnitude 12.4 m/s and directed at an angle of 55.6 ∘ above the horizontal. a) What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. b) What is the answer for part (A) if the initial velocity is at an angle of 55.6 ∘ below the horizontal? c) If the effects of air...
A baseball is thrown from the roof of 21.0 m -tall building with an initial velocity of magnitude 10.7 m/s and directed at an angle of 56.5 ∘ above the horizontal (( Show your work by steps)) A) What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. .. v2 B) What is the answer for part (A) if the initial velocity is at an angle of 56.5 below the...