Question

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?

Answer #1

Gravitational acceleration = g = -9.81 m/s^{2}

Initial horizontal velocity of the ball = V_{x0} = 20
m/s

Initial vertical velocity of the ball = V_{y0} = 11
m/s

Time taken by the ball to hit the ground = T

The ball is kicked from the ground therefore the displacement of the ball in the vertical direction is zero when the ball hits the ground.

0 = V_{y0}T + gT^{2}/2

0 = (11)T + (-9.81)T^{2}/2

T = 2.243 sec

Vertical velocity of the ball when it hits the ground =
V_{y1}

V_{y1} = V_{y0} + gT

V_{y1} = 11 + (-9.81)(2.243)

V_{y1} = -11 m/s

Horizontal velocity of the ball when it hits the ground =
V_{x1}

There is no horizontal force acting on the ball therefore the horizontal velocity of the ball remains constant.

V_{x1} = V_{x0} = 20 m/s

Speed of the ball when it hits the ground = V_{1}

V_{1} = 22.83 m/s

Speed of the ball when it hits the ground = 22.83 m/s

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 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 off a cliff with a velocity if 13.99 m/s at an angle
of 35 deg above the horizontal. the height of the cliff is 15.0m.
ignoring air resistance.
a)whats the horizontal velocity of the ball?
b)how long is the ball in the air?
c)what speed does the ball hit the ground with

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?

A soccer ball is kicked with an initial velocity of 25 m/s at
34 degrees to the horizontal. Find the following:
a. The horizontal and vertical components of the initial
velocity.
b. The highest point reached by the ball.
c. The hang time of the ball.
d. The range of the ball.

A
ball kicked from ground level at an initial velocity of 75 m/s and
an angle theta with the ground reaches a horizontal distance of 500
meters
A.) What is the size of angle theta?
B.) What is time of flight of the ball?
please show work would help each steps

A
soccer ball is kicked with an initial speed of 15 m/s at an angle
of 53 degrees above the horizontal from the top of a building. If
air resistance is negligible then how far does the ball travel
horizontally from the edge of building by the time it hits the
ground ?

A ball is kicked at 34 m/s at an angle of 75 degrees above the
horizontal off the edge of a 25 m cliff. Determine the
following:
a. The time to the highest point.
b. The total time the projectile was in the air.
c. The range the projectile traveled.
d. The final horizontal velocity at Point C.
e. The final vertical velocity at Point C.
f. The resultant of the final velocity.
g. The angle with which the ball...

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?

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 11 minutes ago

asked 11 minutes ago

asked 11 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 17 minutes ago

asked 19 minutes ago

asked 26 minutes ago

asked 39 minutes ago

asked 54 minutes ago

asked 1 hour ago

asked 1 hour ago