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Katyanochek1 [597]
3 years ago
10

An object moves in the eastward direction at constant speed. A net force directed northward acts on the object for 5.0 s. At the

end of the 5.0-second period, the net force drops to zero newtons. Which one of the following statements is necessarily true?A. The direction of the object's acceleration depends on how fast the object was initially moving.B. The magnitude of the object's acceleration depends on how fast the object was initially moving.C. The object will be moving eastward when the force drops to zero newtons.D. The final velocity of the object will be directed north of east.E. The change in the velocity of the object will be directed north of west.
Physics
2 answers:
Pie3 years ago
8 0

Answer: D

The final velocity of the object will be directed north of east

Explanation:

lana [24]3 years ago
5 0

Answer:

d

Explanation:

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Homework help plz it would help a lot ​
blagie [28]

#82

here we know that

acceleration = 2 m/s/s

time = 5 s

initial speed = 4 m/s

now we can use kinematics to find the final speed

v_f = v_i + at

v_f = 4 + 2(5)

v_f = 14 m/s

So correct answer will be option D)

#83

here we know that

acceleration = 3 m/s/s

time = 4 s

initial speed = 5 m/s

now we can use kinematics to find the final speed

v_f = v_i + at

v_f = 5 + 3(4)

v_f = 17 m/s

So correct answer will be option C)

#84

here we know that

acceleration = 7 m/s/s

time = 3 s

initial speed = 8 m/s

now we can use kinematics to find the final speed

v_f = v_i + at

v_f = 8 + 7(3)

v_f = 29 m/s

So correct answer will be option C)

6 0
3 years ago
Atoms are the smallest portions of an element that retain the original characteristics of the element. True or false
kozerog [31]

Answer:

True

Explanation:

Going even smaller than atoms would get you to subatomic particles such as quarks. From there, it is impossible to distinguish elements. So, yes, atoms are the smallest portions of an element that retains the original characteristic of the element.

4 0
3 years ago
A balloon is ascending at 12.4m/s at a height of 81.3m above the ground when a package is dropped. a) How long did it take to re
tankabanditka [31]

Answer:

3secs

Explanation:

Given the following parameters

height H= 81.3m

Velocity v = 12.4m/s

Required

Time it take to reach the ground

Using the equation of motion

H = ut+1/2gt²

81.3 = 12.4t + 1/2(9.8)t²

81.3 = 12.4t + 4.9t²

4.9t² + 12.4t - 81.3 = 0

Using the general formula to find t

t = -12.4±√12.4²-4(4.9)(-81.3)/2(4.9)

t = -12.4±√153.76+1593.48/2(4.9)

t = -12.4±√1747.24/9.8

t = -12.4+41.8/9.8

t = 29.4/9.8

t = 3secs

Hence it took 3secs to reach the ground

5 0
3 years ago
How do sex cells differ from other human cells?
VLD [36.1K]
Sex cells have half as many chromosomes as other cells. Sex cells are therefore called haploid.
7 0
3 years ago
Distance is a __________ quantity, as it has no direction, only magnitude
stellarik [79]

Answer:

-scalar

Explanation:

-A scalar is any quantity that has a magnitude, but no direction

-quantities with no specified direction.

hope it helps:)

8 0
3 years ago
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