What would whales communicate about?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters

Based on this activity, is kinetic energy always transformed into potential energy?