Question

1. Two identical eggs were thrown at the same time from the top of a building of height 100 m at a speed 20. One egg was thrown at an angle 40° above the horizontal while another was thrown at the same angle but below the horizontal. How long does it take for the other egg to hit the ground after the one of the eggs hits the ground?

Does the time difference between the eggs hitting the ground depend on the height of the building?

Assume air resistance is negligible.

2. A 19 cannonball is dropped from the top of a 130 m building. The cannonball experiences an average frictional force of 6 N as it falls. What is the speed of the cannonball when it hits the ground?

3. A cannonball is fired from the top of a hill of height 100 m at a speed 120 and at an angle 40° above the horizontal. Determine the horizontal distance traveled by the cannonball before it hits the ground (0 m).

Assume air resistance is negligible.

I need help with these questions please

Answer #1

A 4.1-kg ball is thrown from the top of a 4-m tall building
(point A) with a speed of 1 m/s at an angle 2 degrees above the
horizontal. If air resistance is negligible, what is the value of
the kinetic energy of the ball as it hits the ground?

An object is thrown from the top of a building with a
horizontal velocity of 40 m/s. The height of the building is 100 m.
Where does the object strike the ground (horizontal range)?
2.
A long jumper leaves the ground at an angle of 20⁰ above the
horizontal axis at a velocity of 11 m/s. How far does he jump in
the horizontal direction?

A rock is thrown from the top of a building 80 m high, with a
speed of 14 m/s at an angle 25 degrees above the horizontal. When
it hits the ground, what is the magnitude of its velocity (i.e. its
speed).

A stone is thrown straight down from the top of a building with
an initial speed of 2.23 m/s. The height of the building is 18.2 m.
You can assume air resistance is negligible
(a) Find the time it takes for the stone to reach the ground.
s
(b) Find the distance the stone travels within the last 1.00 s.
m

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
resistance.
a. What is the vertical component of the velocity just before
the ball hits the ground?
c. What is the angle of the ball just before it hits the ground
( in degrees below x-axsis)?

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
v0 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
v0 of the ball.
b) Find the velocity of the ball just...

A marble is thrown horizontally with a speed of 22.1 m/s from
the top of a building. When it strikes the ground, the marble has a
velocity that makes an angle of 46 ° with the horizontal. From what
height above the ground was the marble thrown?

A ball is thrown horizontally from the top of a building hits
the ground 0.25 s later, Ignore air resistance. If it had been
thrown with twice the speed in the same direction, it would have
hit the ground in:
A) 0.40 s
B) 0.50 s
C) 1.00 s
D) 0.25 s

A person throws two identical stones from the top of a 200-m
high cliff overlooking a lake. Stone 1 is thrown at an angle of
30o above the horizontal with an initial speed of 40
m/s. Stone 2 is thrown at an angle of 30o below the
horizontal with an initial speed of 40 m/s. Neglect air
resistance.
Which stone hits the water first?
Stone 1.
They hit at the same time.
Stone 2.
Which stone strikes the water with...

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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