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Svetllana [295]
3 years ago
5

if a car has a constant acceleration of 4 m/s^2, starting from rest, how fast is it traveling after 5 seconds?​

Physics
2 answers:
UkoKoshka [18]3 years ago
3 0

Answer:

20 m/s

Explanation:

Recall that one of the equations of motions can be written:

v = u + at, (also see attached for reference)

Where,

v = final speed (we are asked to find this)

u = initial speed = 0 (because it starts from rest)

t = time taken = 5s

We simply substitute the given values into the equation:

v = u + at

v = 0 + (4)(5)

v = 20 m/s

Anni [7]3 years ago
3 0

Answer:If a car has a constant acceleration of 4 m/s2, starting from rest, how far has it traveled after 5 seconds? The distance travelled in 5s.

Explanation:

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Use KE= 1/2mv^2
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3 years ago
A 16-slug mass is raised by 10 ft. the PE of the mass increased by?
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<em>The PE of the mass increased by 6,972.95 J</em>

Explanation:

<u>Gravitational Potential Energy</u>

It's the energy stored in an object because of its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

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U = 233.44 * 9.8 * 3.048 = 6,972.95 J

the PE of the mass increased by 6,972.95 J

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