Lesson Check

1. Use comparative relational thinking to

choose which equation is true.

a. 56 + 42 = 63 + 49

b. 87 + 55 = 91 + 51

c. 61 - 37 = 57 - 41

d. 77 - 39 = 85 - 31 V

What net force would be needed to accelerate and object with a mass of 2kg to 100m/s?

A 1700kg rhino charges at a speed of 50.0km/h. what average force is needed to bring the rhino to a stop in 0.50s?

The quantity that describes the rate of change of velocity in a given time interval is called

If energy can not be created or destroyed then how do we act on it or keep it alive (im not asking how to posses it) ?

Predict You are doing an experiment outside on a sunny day. You find the temperature of some sand is 28c. You also find the temperatures of some water is 25c. Explain the difference in temperatures.

What type of wave passes through the spring in the frog toy? Why?

Different kinds of substances have different properties of metals

Magma appears to be rising underneath the mid-oceanic ridges. a. True b. False

The energy required to crack a material

two punds of water vapor at 30 psia fill the 4ft3 left chmaber of a partitioned system. The right chmaber has twice the volume of the left and is initially evacuated.