A Particle Decelerates Uniformly from a Speed of 30 Cm/s

question 54

Multiple Choice

A particle decelerates uniformly from a speed of 30 cm/s to rest in a time interval of 5.0 s.It then has a uniform acceleration of 10 cm/s² for another 5.0 s.The particle moves in the same direction along a straight line.The average speed over the whole time interval is

• A)20 cm/s
• B)35 cm/s
• C)38 cm/s
• D)100 cm/s
• E)12 cm/s

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Definitions:

A Antigens

Substances found on the surface of red blood cells that determine the A blood type in the ABO blood group system.

ABO Antigens

Proteins found on the surface of red blood cells that determine a person's blood type in the ABO blood group system.

Red Blood Cells

Cells in the blood that carry oxygen from the lungs to the body's tissues and return carbon dioxide from tissues back to the lungs.

Megakaryocyte

A large bone marrow cell responsible for the production of blood thrombocytes (platelets), which are critical for clotting.