Using a simple machine the simple machine cannot increase the amount of can increase the amount of
a.)work, force
b.)force, work
c.)power ,energy
d.)energy, power

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?