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?

Expert Solution

genius_generous answered 2 years ago

In an online viral video, a truck rolls down an incline and off a vertical cliff,...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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?

Question