A daring 510-N swimmer dives off a cliff with a runninghorizontal leap, as shown in Figure 1. What must her minimum speedbe just as she leaves the top of the cliff so that she will missthe ledge at the bottom, which is 1.75 m wide and 9.00 m below thetop
- A daring 510-N swimmer dives off a cliff with a runninghorizontal leap, as shown in Figure 1. What must her minimum speedbe just as she leaves the top of the cliff so that she will missthe ledge at the bottom, which is 1.75 m wide and 9.00 m below thetop of the cliff?
Figure 1
- A canoe has a velocity of 0.40 m/s southeast relative to theearth. The canoe is on a river that is flowing 0.50 m/s eastrelative to the earth. Find the velocity (magnitude and direction)of the canoe relative to the river.
- A box rests on a frozen pond, which serves as a frictionlesshorizontal surface. If a fisherman applies a horizontal force withmagnitude 48.0 N to the box and produces an acceleration ofmagnitude 3.00 m/s2 what is the mass of the box?
- Some sliding rocks approach the base of a hill with a speed of12m/s. The hill rises at 36° above the horizontal and hascoefficients of kinetic and static friction of 0.45 and 0.65,respectively, with these rocks.
- Find the acceleration of the rocks as they slide up thehill.
- Once a rock reaches its highest point, will it stay there orslide down the hill? If it stays there, show why. If it slidesdown, find its acceleration on the way down.
