Harry is doing a research project on the movement of plants from the ocean to land. he leaned that plants evolved vascular tissues, which enabled them to pull water from the ground and survive on land. which is most likely another adaptation that contributed to the success of land plants?

cell walls
chloroplasts
waxy cuticle
gametes

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)