Answer:
Surface roughness and deformations
Explanation:
Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other
Answer:
1.93 x 10∧3 N
Explanation:
The picture attached shows the calculation
Organisms overproduce offspring, so only some survive and pass on their traits.
Natural selection is the fitting of a population to its environment.
Explanation:
Most organisms produce more than two or more offspring in their lifetime. Therefore the subsequent generations ideally have more individuals than the previous. However, naturally, the population size does not grow indefinitely. This is because some individuals do not survive to pass their genes to the next generation. Natural selection chooses the best fit individuals to habitat, and these live long enough to pass their traits to the next generation. Natural selection powers the evolution of a population even as environment changes
Learn More:
For more on natural selection check out;
brainly.com/question/12495043
brainly.com/question/1184863
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Answer:
vertical component = 9.7m/s
Explanation:
Vy= (23)sin25 = 9.7m/s
