Question

2. A ball is thrown straight upward from the window of a building 40 meters above the ground with an initial velocity of 20 m/s. Calculate

a. The speed of the ball after 1.5 sec.

b. The time needed for ball to reach its maximum height.

c. The maximum height.

d. The time needed for the ball to return back to the same window which was thrown

e. The time needed for the ball to reach the ground.

f. Final velocity of the ball just before it reaches the ground.

Answer #1

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I throw a ball straight upward at an initial velocity of +40
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the same height as where you threw it? (c) how does the
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going 0 m/s?

A ball with mass m kg is thrown upward with initial velocity 16
m/s from the roof of a building 28 m high. Neglect air resistance.
Use 9.8 m/s2. Round your answers to one decimal place. (a) Find the
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Assuming that the ball misses the building on the way down, find
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A ball is thrown vertically upward from a window that is 3.6 m
above the ground. The ball's initial speed is 2.8 m/s and the
acceleration due to gravity is 9.8 m/s^2.
a) What is the ball's speed when it hits the ground?
b) How long after the first ball is thrown should a second ball
be simply dropped from the same window so that both balls hit the
ground at the same time?

2.
(b) A ball is thrown in the upward direction is to reach a
maximum height of 100 meters.What is the initial velocity with
which the ball is thrown from an initial height of 10 meters?

A
ball is thrown from the roof of a building. The initial velocity
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maximum height in 1.04 seconds. Express all vectors in terms of
unit vectors i and j. The ball strikes the ground at a horizontal
distance from the building of 33.1 meters.
a.) What is the vertical velocity (vector) at t=1.04
seconds?
b.) What is the initial vertical velocity (vector)?
c) What is the inital...

A
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m / sec. Acceleration resulting from gravity is -9.8 m/sec^2.
Neglecting air resistance, solve for the velocity, v(t), and the
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A ball is thrown straight up from the edge of the roof of a
building. A second ball is dropped from the roof a time of 1.17 s
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A.
If the height of the building is 20.3 m, what must the initial
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Express your answer in meters per second.
B.
Consider the same situation, but now let...

A
ball is thrown directly upward from a height of 3 ft with an
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height and find the maximum height.

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