Question

1. A girl throws a rock horizontally, with a velocity of 13 m/s,
from a bridge. It falls 17 m to the water below. How far does the
rock travel horizontally before striking the water, assuming
negligible air resistance? Use g = 9.8 m/s^{2}

^{2.} Suppose one of Napoleon cannons has a muzzle speed
of 32m/s. It was aimed at 54 ^{◦} angle. What height can
the cannon ball reach? Use g = 9.8 m/s^{2}

^{3.}A car traveling 69 km/h is 247 m behind a truck
traveling 93 km/h. How long will it take the car to reach the
track? Calculate to one decimal

Answer #1

1. A car traveling 69 km/h is 247 m behind a truck traveling 93
km/h. How long will it take the car to reach the track? Calculate
to one decimal
2.Suppose one of Napoleon cannons has a muzzle speed of 32m/s.
It was aimed at 54 ◦ angle. What height can the cannon
ball reach? Use g = 9.8 m/s2
Calculate to one decimal
3.A girl throws a rock horizontally, with a velocity of 13 m/s,
from a bridge. It...

A frustrated student throws their physics textbook horizontally,
with a velocity of 7.2m/s, from a bridge. It falls 19m to the water
below. How far does the textbook travel horizontally before
striking the water?

A rock is thrown downward with a speed of 10.7 m/s from the top
of a cliff which height is 234 m. What was the time for the rock to
reach the bottom of the cliff? (g = 9.59 m/s2 and assume air
resistance is negligible)

a stone is thrown horizontally with an initial speed of 30 m/s
from a bridge. fins the stone's total speed when it enters the
water 4 seconds later, assuming that air resistance is
negligible

4. An air plane flies horizontally with
X-velocity V0x= 360 m/s at
an altitude (height above the ground)=H=Dy= 3645
m. A bag of mass M=40 Kg falls off from
the plane, and moves to the ground in a parabolic path without air
resistance while the plane ciontinues to fly horizontally. Use
g=10 m/s2 and V0Y=0
Part A
The time the bag takes to hit the ground is t=____
seconds
The time the bag takes to hit the ground is t=____...

1.A boy jumps from rest, straight down from the top of a cliff.
He falls halfway down to the water below in 0.756 s. How much time
passes during his entire trip from the top down to the water?
Ignore air resistance. t = ?
2.An astronaut on a distant planet wants to determine its
acceleration due to gravity. The astronaut throws a rock straight
up with a velocity of +15.7 m/s and measures a time of 10.5 s
before...

Part 1. A 1350-kilogram truck moving with a speed of 22.0 m/s
runs into the rear end of a 1290-kilogram stationary car. If the
collision is completely inelastic, how much kinetic energy is lost
in the collision?
Part 2. An 20 g rifle bullet traveling at 290 m/s buries itself
in a 5.4 kg pendulum hanging on a 3.2 m long string, which makes
the pendulum swing upward in an arc. Determine the maximum vertical
displacement of the pendulum (height).(g...

1. A car accelerates from 12 m/s to 25 m/s in 5.0s. What was its
acceleration? How far did it travel in this time? Assume constant
acceleration.
2. if you used only a keyboard to enter data, how many years
would it take to fill up the hard drive in a computer that can
store 1.0 terabytes of data? Assume 35-hour work weeks,
and that you can type 180 characters per minute, and that one byte
is one keyboard character.
3....

A projectile is shot horizontally at 25 m/s from the roof of a
building 90 m tall. Use g = 10 m/s2. Choose positive vertical
direction upward. •
How long does it take the projectile to reach the ground below
(round to the nearest integer) .
• What is the horizontal range of this projectile, i.e. how far
from the base of the building does the projectile land (round to
the nearest integer) .
• What is the horizontal component...

21) A person carries a 25.0-N rock through the path shown in the
figure, starting at point A and ending at point B. The total time
from A to B is 1.50 min. How much work did gravity do on the rock
between A and B?
A) 625 J
B) 20.0 J
C) 275 J
D) 75 J
E) 0 J
22) A person carries a 2.00-N pebble through the path shown in
the figure, starting at point A and...

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