A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second2. How long does it take the bike to reach the final velocity?

Answers

Answer 1

Answer: 35-20 = 15m/s difference
15/4 = 3.75 seconds

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9. Which of the following human body systems work together for support, protection, and movement? A. the respiratory system and cardiovascular system B. the skeletal system and muscular system C. the skeletal system and integumentary system D. the integumentary system and digestive system

Answers

The Human body system that work together for support, protection and movement is ; ( B ) The skeletal system and muscular system

The skeletal system provides support for every other system present in the human body and it also gives the organism its shape as well. while the muscular system protects the vital internal organs from external shocks.

Both Skeletal and muscular system provide movement, support and protection for the Human body because without any of these the human body cannot make movements or support itself efficiently.

Hence we can conclude that The Human body system that work together for support, protection and movement is The skeletal system and muscular system.

Learn more : brainly.com/question/21835432

Answer:

Explanation:

Support and Movement involves the skeletal and Muscular system.

94. While you are traveling in a car on a straight, level interstate highway at 90 km/h another car passes you in the same direction, its speedometer reads 120 km/h (a) What is your velocity relative to the other driver? (b) What is the other car's velocity relative to you?

Answers

Answer:

a) $v_{A_(B)}$ = -30 m/s

b) $v_{B_(A)}$ = 30 m/s

Explanation:

Consider the car A travel at a velocity of $v_(A)$ = 90 km/h and the car B travel at the velocity of $v_(B)$ = 120 km/h. As the velocity of the car B is greater than the car A, So it cross the car A. Consider The velocity of car A relative to car B is $v_{A_(B)}$ and it is equal to the velocity of car A minus the velocity of car B.

$v_{A_(B)}$ = $v_(A)$ - $v_(B)$

$v_{A_(B)}$ = 90 - 120

$v_{A_(B)}$ = -30 m/s

Consider The velocity of car B relative to car A is $v_{B_(A)}$ and it is equal to the velocity of car B minus the velocity of car A.

$v_{B_(A)}$ = $v_(B)$ - $v_(A)$

$v_{B_(A)}$ = 120 - 90

$v_{B_(A)}$ = 30 m/s

Two identical space probes are orbiting Jupiter. Scientists determine that one of the space probes has a larger gravitational force acting on it than the other. which of the following is the most likely reason for the difference?A. One space probe reached Jupiter before the other.
B. One space probe has more air resistance than the other.
C. Only one space probe is exerting a gravitational force on the other.
D. One space probe is closer to Jupiter than the other

Answers

If the probes are identical, then the one that feels a larger gravitational
force is orbiting closer to Jupiter than the other one is.

If they're not identical, then the one with greater mass will feel more
gravitational force than the one with less mass, even if they're both
the same distance from Jupiter. (We know this from the experimental
observation that fatter people weigh more, even on Earth.)

Answer:

The correct answer is D

Explanation:

What is the difference between mass and weight in Physical Science?

Answers

Mass is a property of a lump of matter. It goes wherever the lump goes,
and it doesn't depend on what else may be nearby.

Weight is the force of gravity between a lump of matter and some other
mass. Since it depends on what else may be nearby, it can be different in
different places.

This is the correct answer in Physical Science. It's also the correct answer
in Biology, Math, Political Science, and Comparative Middle Eastern Religions.

mass is how much matter is in an object
wieght is a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.

Is the earth getting heavier

Answers

Yes. Earth gets bigger every year. This cumbersome everyday mass accumulation can be charged toward nearly 100 weights of stars penetrating the Earth’s environment per day.

Naturally yes, gravity plus the ever-increasing growing population of living organisms (human beings, animals, bugs, and etc.). Hope this helps!

Help. “What is the particles acceleration at t=3.0 s?”

Answers

Answer:

-2 m/s²

Explanation:

Acceleration is the rate of change of velocity:

a = Δv / Δt

In other words, it's the slope of the line on a velocity-time graph. The line at t=3 also goes through the points (2, 4) and (4, 0).

a = (4 m/s − 0 m/s) / (2 s − 4 s)

a = -2 m/s²

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