Question

I throw a ball straight upward at an initial velocity of +40 m/s. Assuming g is -10 m/s2, (a) how long would it take for the ball to reach its maximum height before falling back down? (b) what will its final speed be right before reaching your hand again at the same height as where you threw it? (c) how does the acceleration of the ball change as it reaches the top of its path going 0 m/s?

Answer #1

A man throws a ball straight upward with speed 30 m/s from the
top of a building that is 75 m high. Ignore air resistance and
choose the vertical y-axis to be positive downward with
origin at the point of throw (top of the building).
Represent the initial velocity and the acceleration vectors in
the reference y-axis above.
Find the maximum height the ball reaches with respect to the
ground.
How long does it take the ball to reach the...

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Correct Answer was...

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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...

You throw a ball vertically upward with an initial velocity of
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positive and downward motion is negative and gravity pulls
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(b) The equation for velocity (Because you are looking for an
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A tennis player tosses a tennis ball straight up and then
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release.
(a) What is the acceleration of the ball while it is in
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magnitude
m/s2
direction
upward, downward, or the magnitude is zero.
(b) What is the velocity of the ball when it reaches its maximum
height?
magnitude
m/s
direction
upward, downward, or the magnitude is zero.
(c) Find the initial velocity of the ball....

A tennis player tosses a tennis ball straight up and then
catches it after 1.81 s at the same height as the point of
release.
(a) What is the acceleration of the ball while it is in
flight?
magnitude ______
m/s2
direction_____
(b) What is the velocity of the ball when it reaches its maximum
height?
magnitude
____ m/s
direction____
(c) Find the initial velocity of the ball.
____________m/s upward
(d) Find the maximum height it reaches.
______________ m

A ball is thrown vertically upwards with an initial velocity of
10 m/s, from a platform that is at a height of 75 m above the
ground. The ball reaches a maximum height and, on the way down,
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magnitude of the acceleration due to gravity to be 10 m/s2.
(a) What is the velocity of the ball just before it reaches the
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(b) How many seconds...

A girl throws a ball straight up into the air with the initial
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You throw a baseball directly upward at time t = 0 at an initial
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A rock is thrown straight upward from the top of a building with
an initial velocity of 15.0 m/s, at an initial height of 45.0 m
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gravity is 9.79 m/s2 (in Greeley).a. What is the time needed for
the rock to reach its maximum height?b. What is its maximum height
with respect to the ground?c. How...

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