Help pls include work plzzz 15. If an object accelerates from rest, with a constant acceleration of 5.4 m/s2, what will its velocity be after 28 s?

16. An object is traveling at a constant velocity of 15 m/s when it experiences a constant acceleration of 3.5 m/s2 for a time of 11 s. What will its velocity be after that acceleration?

17. An object is moving at a velocity of 23 m/s. It accelerates to a velocity of 85 m/s over a time of 8.3 s. What acceleration did it experience?

Explanation:

15. vt = vo + at

vo = 0 (at rest)

vt = 0 + (5.4)(28) = 151.2 m/s

16. vt = vo + at

vo = 15 m/s

vt = 15 + (3.5)(11) = 53.5 m/s

17. vt = vo + at

vo = 23 m/s

vt = 85 m/s

a?

85 = 23 + a(8.3)

85 - 23 = 8.3a

62 = 8.3a

a = 62/8.3 = 7.469 ≈ 7,5 m/s²

28. evolution

29. environment, survive, offspring  

explanation:

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.