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3 years ago

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5 What is the kinetic energy of a 28 kg car moving at a velocity of 7 m/s O 1963 98 686 J O 350 nocter diagram, at which point w

ould the kinetic energy of the

1 answer:

Shtirlitz [24]3 years ago

4 0

Answer:

98 joules

Explanation:

1/2 of 28 = 14

14 multiply by 7= 98 joules

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if i am changing velocity, i must also have <u>acceleration</u> and a net <u>force</u>

<h2><u>Newton's</u><u> </u><u>first</u><u> </u><u>law</u><u> </u><u>of</u><u> </u><u>motio</u><u>n</u></h2>

Newton's first law of motion states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

According to Newton's first law of motion, without a force acting on an object, its velocity does not change. The net force acts on an object to change its velocity and cause acceleration.

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2 years ago

The formula v = √2.5r models the maximum safe speed, v, in miles per hour, at which a car can travel on a curved road with radiu

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Answer:

The maximum safe speed of the car is 30.82 m/s.

Explanation:

It is given that,

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$v=\sqrt{2.5\ r}$ .........(1)

A highway crew measures the radius of curvature at an exit ramp on a highway as 380 feet, r = 380 feet

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$v=\sqrt{2.5\ \times 380}$

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3 years ago

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Whole body METABOLISM

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3 years ago

A ship sets sail from Rotterdam, The Netherlands, heading due north at 8.00 m/s relative to the water. The local ocean current i

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Answer:

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Direction $\theta$ = 40°

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3 years ago