Logan is a land surveyor. He wants to determine d, the distance across a lake that cannot be directly measured. He draws this diagram to help him. A right triangle with side length 7 kilometers, d, and hypotenuse of 9 kilometers. What is the approximate distance across the lake, to the nearest tenth of a kilometer? 5. 7 km 6. 3 km 11. 4 km 16. 0 km.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?