Janet ran 30 meters in 4 seconds, what is her speed.

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Apendulum has a mass of 1.5 kg and starts at a height of 0.4 m. if it is released from rest, how fast is it going when it reaches the lowest point of its path? acceleration due to gravity is g = 9.8 m/s2. a. 2.8 m/s b. 0 m/s c. 5.9 m/s d. 4.3 m/s

Name three different units of energy used to measure heat and describe what type of situations each is usually used.