Question

**2.** *(15pts, 5pts
each)* A ball is thrown from the top of a building that is
*H* = 40 m height. It has an initial velocity
*v*_{0} that is at angle
of = 53° below the horizontal direction, as shown in the
below Figure. The ball hits the ground *t* = 2.0 s after being
thrown. You may neglect air resistance.

a) Find the *magnitude* of the *initial velocity*
*v*_{0} of the ball.

b) Find the *velocity* of the ball just before it hits the
ground at 2 s.

*c) Sketch graphs* of *x-position* vs. *time* (*x
vs. t*), *y-position* vs. *time* (*y vs. t*),
*x-velocity* vs. *time* (*v*_{x} *vs. t*) and *y-velocity*
vs. *time* (*v*_{y}
*vs. t*) for the motion of the ball while it is in the
air.

Answer #1

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A ball is thrown horizontally from the top of a 68 m building
and lands 110 m from the base of the building. Ignore air
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a. What is the vertical component of the velocity just before
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c. What is the angle of the ball just before it hits the ground
( in degrees below x-axsis)?

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
above the ground. The rock just misses the edge of the building’s
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gravity is 9.79 m/s2 (in Greeley).a. What is the time needed for
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with respect to the ground?c. How...

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 horizontally with an initial speed of 50m/s
from the top of a building 60m tall
a) How far away from the building will the ball hit the
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b) What is the horizontal component of its velocity when it hits
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c) Find the magnitude and direction of the velocity when it hits
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A ball is thrown horizontally from the top of a building hits
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A) 0.40 s
B) 0.50 s
C) 1.00 s
D) 0.25 s

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1. A ball is thrown upwards from the top of a building at an
angle of 37degress to the horizontal with a speed of 20 m/s.
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A ball is thrown straight down from the top of a 497-foot
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s(t) = -16t2 +
v0t + s0
What is its velocity after 2 seconds?
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A
ball is thrown upward from a height of 3m at an initial speed of 45
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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it hits the ground.

A ball is thrown horizontally from the top of a 70.0-m building
and lands 90.0 m from the base of the building. Ignore air
resistance. What is the velocity just before it hits the ground? In
meters per second

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