2.1 Section Review 1. An engineer designing a house needs to know how much force it
takes to break different size beams of wood (Figure 2.10). List at
least five variables important for figuring out this information.

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when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

option number c is the right answer.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).