Question

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/s^{2}

Calculate to one decimal

3.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}

^{4.}A boy throws a rock with an initial velocity
of 3.9m/s at 48° above the horizontal. How long does it
take for the rock to reach the maximum height of its trajectory if
air resistance is negligibly small and *g* = 9.80 m/s2? Give
the answer with two decimals

5.An astronaut stands by the rim of a crater on the Moon, where the acceleration of gravity is 1.62 m/s2 and there is no air. To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the depth of the crater is 108 m, how long does it take for the rock to fall to the bottom of the crater?

6.To determine the height of a bridge above the water, a person drops a stone and measures the time it takes for it to hit the water. If the time is 1.6 s, what is the height of the bridge? Neglect air resistance.

Use g = 9.8m/s^{2}

Answer #1

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/s2
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
3.A car traveling 69 km/h...

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

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)

5) Starting from rest, a car accelerates at a constant rate,
reaching 88 km/h in 17 s. (a) Find its acceleration. (b) Find how
far does it goes in this time.
6) A delivery drone drops a well-cushioned package from a height
of 15.7 m onto a customer’s porch. At what speed does the package
hit the porch?
7) A diver drops from a 7.44-m high cliff. (a) At what speed
does she enter the water? (b) How long is...

1. A ball is released, rest, and drops straight down
965 m.
a. How long will it take to hit the ground?
b. How long will it take to reach the ground if the ball is thrown
down with an initial speed of 40 m/s?
2. A soccerball is released, rest, and drops straight
down 1678 m.
a. How long (in hours) will it take to hit the ground?
b. How long (in hours) will it take to reach the...

A 2.0 m tall basketball player is standing a horizontal distance
of 7.0 m away from a basketball hoop. The height of the hoop is 3.0
m above the floor. The basketball player throws the ball at an
angle of 60 degrees above the horizontal, and from an initial
height of 2.0 m above the floor. (Use g= 9.8 m/s2 and neglect air
friction effects). Give your answer to 2 significant figures. a)
How long does it take for the...

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...

Nicholas throws a ball with an initial speed of 10.00 m/s at
an angle of 58° above the horizontal. The ball leaves her hand 0.88
m above the ground and experience negligible air resistance.
(a)How far from where the child is standing does the ball hit
the ground?
(b)How long is the ball in flight before it hits the
ground?
(c)What is the magnitude of the ball's velocity just before
it hits the ground?
(d)At what angle below the horizontal...

1. An airplane is traveling 835 km/h in a direction 41.5 ∘
west of north
PART A
Find the components of the velocity vector in the northerly
and westerly directions. Enter your answers using three significant
figures separated by a comma.
PART B
How far north and how far west has the plane traveled after
4.00 h? Enter your answers using three significant figures
separated by a comma.
BOTH
QUESTIONS NEED TWO ANSWERS.
2. A football is kicked at ground...

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 20 minutes ago

asked 36 minutes ago

asked 40 minutes ago

asked 51 minutes ago

asked 53 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago