An adventurous cliff jumper runs horizontally off a cliff at time t=0t=0t, equals, 0. We can ignore air resistance. A grey cliff ledge is shown on the left side of the image with blue water below it and across the bottom of the screen. A brown stick-figure person is running on the cliff towards the right. On the right side is a small grey coordinate axis showing up and right as positive directions.

Which graph best describes the cliff jumper’s vertical acceleration over time?
Assume the origin of the coordinate system to be the cliff edge.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion