During takeoff, an airplane goes from 0 to 56 m/s in 9 s. How fast is it going after 4 s?

The combining of one substance with another to yield a different product is the result of a (n): A: physical change B: chemical change C: phase change D: exothermic change

A ball has a diameter of 3.84 cm and average density of 0.0841 g/cm3. What force is required to hold it completely submerged under water?

Your washer has a power of 350 watts and your dryer has a power of 1800 watts how much energy do you use to clean a load of clothes in 1 hour of washing and 1 hour of drying? A. 1.29 x 10^3 J B. 2.58 x 10^3 J C. 1.55 x 10^7 J D. 7.74 x 10^6 J

A 300 g bird is flying along at 6.0 m/s and sees a 10 g insect heading straight towards it with a speed of 30 m/s. The bird opens its mouth wide and swallows the insect. a. What is the birds speed immediately after swallowing the insect? b.

Using the seven forms of energy, what kind of energy does ocean waves have?

Which concept was supported by taking measurements of the same stars at night and then again during solar eclipses?

Which of these is a biotic factor? A) topography B) soil C) air D) bacteria

One reason it's often easy to miss and action reaction pair is because of?

Recently, some information about a distant planet was learned. It has a radius of 6000000 meters, and the density of the atmosphere as a function of the height h (in meters) above the surface of the planet is given by δ (h) =

Which of the following is not a good approximation of the relationship between independent and dependent variables? A. independent: first, dependent: next B. independent: input, dependent: output C. independent: cause, dependent: effect D.