Question

1) On Planet #1, you drop a stone from rest, 94.9 m above the ground, and the stone hits the ground 2.96 s later. What is the value of g on Planet #1?

2)On planet #2, you launch a projectile straight up from the ground at a speed of 32.6 m/s. The projectile reaches a maximum height of 68.0 m before falling back to the ground. What is the value of g for planet #2?

3)On planet #3, you fire a projectile horizontally from the edge of a vertical cliff 62.4 m above the ground, with an initial speed of 78.6 m/s. The projectile lands 28.4 m away from the base of the cliff. What is the value of g for planet #3?

4)On planet #4, you fire a projectile from the ground at an initial speed of 29.4 m/s at an angle of 30.3 degrees above the horizontal. The projectile lands 36.5 m away from the launch point. What is the value of g for planet #4?

Answer #1

1a. You launch a projectile at an initial speed of 43.8 m/s from
the ground. After 4.30 seconds of flight, the projectile lands on
the ground. At what angle above the horizontal was the projectile
launched?
b. A projectile is fired from the ground, reaches a maximum
height of 28.4 m and lands a distance of 69.3 m away from the
launch point. What was the projectile s launch velocity?
c. You launch a projectile toward a tall building, from...

A stone is thrown from the edge of a cliff 350 ft above the
ground with a speed of 20 ft/s and an angle of 38° above horizon.
How long will it take the stone to reach the ground? And what is
the speed of the stone in impact? (Hint:g ≈ 32 ft/ s^2)

You launch a projectile at an initial speed of 46.4 m/s from the
ground. After 5.70 seconds of flight, the projectile lands on the
ground. At what angle above the horizontal was the projectile
launched?
A) 26.5 degrees
B) 24.1 degrees
C) 37.1 degrees
D) 48.2 degrees

A projectile is shot from the edge of a cliff 100 m above ground
with an initial speed of 50.0 m/s at an angle of 26° below the
horizontal. How much time does it take the projectile to hit the
ground?

You launch a projectile toward a tall building, from a position
on the ground 30.0 m away from the base of the building. The
projectile s initial velocity is 40.5 m/s at an angle of 56.8
degrees above the horizontal. At what height above the ground does
the projectile strike the building?

A projectile is shot from the edge of a cliff 115 m m above
ground level with an initial speed of v0 v 0 = 54 m/s m / s at an
angle of 35.0∘
A) Determine the time taken by the projectile to hit point P P
at ground level.
B)Determine the distance XX of point PP from the base of the
vertical cliff.
C)At the instant just before the projectile hits point PP, find
the horizontal and the...

A stone falls from rest from the top of a cliff. A second stone
is thrown downward from the same height 3 . 2 s later with an
initial speed of 62 . 72 m / s. They hit the ground at the same
time.
(a) How long does it take the first stone to hit the ground? The
acceleration of gravity is 9 . 8 m / s 2 . Answer in units of
s.
(b) How high is...

A rock is dropped, from rest, from a height of 8.9 m above the
ground at t = 0 s. At the same time that the rock is
dropped a stone is thrown upward from a height of 1.1 m above the
ground at a speed of 7.1 m/s. The stone travels straight upward
toward the rock. There is no air resistance.
a. Determine the height above the ground where the rock hits
with the stone. Blank 1. Calculate the...

A stone 0.44 kg mass is released from rest from a height of 29.4
m above the ground. Ignoring air resistance and letting the ground
be the zero potential energy level,
Determine the final kinetic energy of the stone using energy
conservation principle only, not as a free fall.
Determine the work done on the stone by gravity.

A projectile is launched horizontally from a cliff that is
15.0 m above the ground with an initial velocity of 7.50 m/s. How
far from the base of the cliff does it land?
13.1m
1.75m
23.0m
3.06m

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