A boulder rolls over a 50m high cliff. How fast was
the boulder moving if it...
A boulder rolls over a 50m high cliff. How fast was
the boulder moving if it was found 180 m on the ground? At what
time did the boulder hit the ground? At what velocity was it
approaching the ground?
In an online viral video, a truck rolls down an incline and off
a vertical cliff, falling into a valley below. The truck starts
from rest and rolls down the incline, which makes an angle of 21.0°
below the horizontal, with a constant acceleration of 3.37
m/s2. After rolling down the incline a distance of 30.0
m, it reaches the edge of the cliff, which is 35.0 m above ground
level.
How much time (in s) does it take the...
A tennis ball rolls off a vertical cliff at a projection angle
of zero degrees to the horizontal (no initial vertical motion
upwards) with a horizontal velocity of 11.52 m/s. If the cliff is
-25 m high, calculate the horizontal distance in metres out from
the base of the cliff that the ball will land.
We can calculate the mass of a galaxy by observing how fast
stars are moving around its edge. Further we can estimate how many
stars are in that galaxy using an average star mass of around 1/2
solar mass. NGC 253 (image below) is a flat spiral galaxy with a
diameter of about 60,000 ly. If a star on the edge of NGC 253 is
observed to have an angular velocity of about 7.8x10-16 rad/s, (a)
calculate the mass of...
A wheel with a weight of 392 N comes off a moving truck and
rolls without slipping along a highway. At the bottom of the hill
it is rotating at an angular velocity of 27.7 rad/s. the radius of
the wheel is .596 m and its moment of inertia about its rotation
axis is .800 MR^2. Friction does work on the wheel as it rolls up
the hill to a stop at a height of h about the bottom of...
A wheel with a weight of 395 N comes off a moving truck and
rolls without slipping along a highway. At the bottom of a hill it
is rotating at an angular velocity of 22.2 rad/s . The radius of
the wheel is 0.647 m and its moment of inertia about its rotation
axis is 0.800 MR2. Friction does work on the wheel as it rolls up
the hill to a stop, at a height of h above the bottom...
1) A wheel with a weight of 396 N comes off a moving truck and
rolls without slipping along a highway. At the bottom of a hill it
is rotating at an angular velocity of 27.5 rad/s . The radius of
the wheel is 0.584 m and its moment of inertia about its rotation
axis is 0.800 MR2. Friction does work on the wheel as it rolls up
the hill to a stop, at a height of h above the...
A woman stands at the edge of a cliff and throws a rock
horizontally over the edge with a speed of
v0 = 16.0 m/s. The rock leaves her
hand at a height of h = 33.0 m above level ground
at the bottom of the cliff, as shown in the figure. Note the
coordinate system in the figure, where the origin is at the bottom
of the cliff, directly below where the rock leaves the hand.
Write the equations...
A student stands on the edge of a cliff and throws a stone
horizantally over the edge with a speeed "v1". The cliff is "h"
meters high. Given [h, v1]
a. The time for the stone to hit the ground
b. The horizantal distance the stone traveled while in the
air.
c. The magnitude and direction of the stone's velocity just
before hitting the ground
A student stands at the edge of a cliff and throws a stone
horizontally over the edge with a speed of vi = 10.0 m/s. The cliff
is h = 41.9 m above a body of water as shown in the figure below.
With what speed and angle of impact does the stone land?
A boy decides to toss a rock over a cliff. If the mass of the
rock is 0.5 kg and he tosses it horizontally with a velocity of 10
m/s, how long will it take the rock to hit the water if the cliff
where he is standing is 175 m above the ocean? What is the
magnitude of its velocity when it hits?