Question

a ball of mass 2kg is kicked from the edge of the flat roof of a small building. the initial velocity of the ball makes an angle of 30° with the horizontal, and the magnitude of the initial velocity is 1 m/s. If the ball is moving at a speed of 9 m/s and it hits the ground, how tall is the building?

Answer #1

ball is kicked with an initial speed of 10 m/s above the
horizontal with an initial angle 30 degree. What is the maximum
height this projectile motion? What is the speed of the ball at its
maximum height? How long does it take the ball to reach the maximum
height? What is the speed of the ball when it hits the ground? What
is the magnitude of the acceleration of the ball when it is at the
maximum height?

Mark is standing of the edge of the roof of a 25.0 m tall
building. He kicks a soccer ball at a velocity of 14.0 m/s at an
angle of 37.0° above the horizontal.
a) How long will the ball be in the air (assume no air
resistance and no buildings in the way to interfere with the path
of the ball)?
b) What will be the maximum height of the ball?
c) With what velocity will the ball hit...

A soccer ball is kicked with an initial horizontal velocity of
15 m/s and an initial vertical velocity of 15 m/s.
What is the initial speed of the ball?
What is the initial angle θθ of the ball with respect to the
ground?
What is the maximum height the ball goes above the ground?
How far from where it was kicked will the ball land?
What is the speed of the ball 0.7 seconds after it was
kicked?
How high...

A soccer ball is kicked from the top of one building with a
height of H1 = 30.3 m to another building with a height of H2 =
13.4 m. The ball is kicked with a speed of v0 = 15.1 m/s at an
angle of θ = 80.0° with respect to the horizontal. The mass of a
size 5 soccer ball is m = 450 g. What is the speed of the soccer
ball, when it lands on the...

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
ground?
b) What is the horizontal component of its velocity when it hits
the ground?
c) Find the magnitude and direction of the velocity when it hits
the ground?

Question 11 : A baseball with a mass of 142.5 g is thrown from
the roof of a building 50 m above the street. The ball is thrown
with an initial speed of 28 m/s and at an angle of 60◦ with respect
to horizontal.
A) What are the initial kinetic energy, potential energy, and
velocity components of the ball?
B) What are the components of the ball’s velocity vector at the
apex of its ﬂight path?
C) What is...

A stone is kicked so that it leaves the ground with an initial
velocity of 10.0 m/s at an angle of 37.0deg. The stone is kicked
toward a loading dock whose near edge is 3.00m away and 1.00m
high.
a.) What are the components of the stone's initial velocity? (I
have 7.99m/s (horizontal) + 6.02m/s (vertical))
b.) How high does it go? (I have 1.85 m)
c.) How far from the edge does it strike the dock?
d.) How fast...

A ball is kicked with
an initial velocity of 20 m/s at an angle of 30o above
the horizontal. Calculate the following:
At what speed does the ball hit the ground?
For how long does the ball remain in the air?
What maximum height is attained by the ball?

A ball is kicked with an initial velocity of 20 m/s in the
horizontal direction and 11 m/s in the vertical direction. (Assume
the ball is kicked from the ground.) At what speed (in m/s) does
the ball hit the ground?

You throw a ball, m = 2kg, with an initial velocity of 20 m/s at
an angle of 60 degrees from the top of a 30 m cliff?
a. using energy considerations, what is the magnitude of the
velocity when it hits the ground?
b. what is the total mechanical energy in this system?
c. what if I change the angle to 50 degrees; does this change
your answers?

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