When the driver hit brakes she felt she was thrown forward . Use one of Newton’s laws to explain ?

2 answers:

6 0

Newton's first law or law of inertia states that a body will remain at its state of rest or continue moving with uniform speed unless an external force compels it to do otherwise. The car(body) was in motion till the driver hit the brakes (external force) which made her feel like she was thrown forward.

jeyben [28]4 years ago

3 0

Inertia, Newton's first law.

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Dihybrid Practice Problems

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Answer:

a. Genotype of the parents are; Rr and rr

b. Please find the explanation to A below

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This question involves a single gene that codes for flower color in a plant. The allele for red flower (R) is dominant over the allele for white flower (r). This means that a plant that is heterozygous for flower color (Rr) will be red.

In a cross between a plant with red flowers and white flowers, the phenotype of the offsprings is represented as: 37 plants with red flowers and 41 plants with white flowers. Observing from this number, one would realize that the phenotype ratio is equivalent to 1:1. This phenotypic ratio is only possible when the parent with red flower is heterozygous for the gene i.e. Rr. Hence, the genotype of the parents are: Rr and rr.

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