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NikAS [45]
2 years ago
15

During a race, a sprinter accelerated 1.8 m/s 2 in 2.5 seconds.How many meters per second did the sprint increase with this amou

nt of acceleration
Physics
1 answer:
trasher [3.6K]2 years ago
3 0

During a race, a sprinter accelerated 1.8 m/s 2 in 2.5 seconds. The sprint increase with this amount of acceleration by 4.5 m/s.

<h3>What is acceleration?</h3>

Acceleration is the time rate of change of velocity.

Acceleration a = velocity v / time t

1.8 = v/2.5

v = 4.5 m/s

The sprint increase with this amount of acceleration by 4.5 m/s.

Learn more about acceleration.

brainly.com/question/12550364

#SPJ1

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4 0
3 years ago
1. List some environmental challenges identified by the Brundtland Commission's overview, as well as a key strategy for addressi
natka813 [3]

The Brundtland Commission spotted as a matter of urgency, the interconnection between natural resource use and the economy.

<h3>What is the  Brundtland Commission?</h3>

The Brundtland Commission was set up with the intention to achieve sustainable development. The tenure of the commission lasted from 1984 to 1987.

The commission identified the pillars of sustainable growth as economic growth, environmental protection, and social equality. The committee opined that environmental problem emanates from poverty in the southern region and reckless consumption of resources in the northern region.

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4 0
2 years ago
John stirs the hot soup with a spoon the heat travels up the spoon to his hand by what process does the heat travel up the spoon
Gemiola [76]

Answer: is<u><em> Second Law of Thermodynamics (conduction)</em></u>.

john stirs the hot soup with a spoon the heat travels up the spoon to his hand is due to the basic law of conduction, also known as the second law of thermodynamics . Heat always travels from hot things toward the cold things, is proved by the phenomena that a cup of tea always get cold, and and a cold dessert or ice cream always melts. Its not possible that the cup of tea become boiling by itself and similarly an ice cream getting frozen on its own in on a hot day. To understand this point there are three ways in which heat can travel namely, conduction, radiation and convection. The process due to heat travels up to the spoon from the soup towards john's hand is called conduction. Conduction is the process in which heat travels between two solid things that are at different temperature. Cooking soup in a saucepan with a metal spoon will make your fingers hot because of the conduction of heat, that travels through the boiling soup pan through metal spoon towards your hand.

6 0
3 years ago
A 706-N man stands in the middle of a frozen pond of radius 8.0 m. He is unable to get to the other side because of a lack of fr
mariarad [96]

Answer:

t=62 s

Explanation:

Applying the conservation of linear momentum formula:

(m1+m2)*v_{o1}=m1*v_{f1}+m2*v_{f2}

the initial velocity is zero, we can calculate the man's mass using the gravitational force formula:

F_g=m.g\\\\m=\frac{706N}{9.81}\\\\m=72.0kg

now:

m*v_{f1}=-m_b*v_b\\\\V_{f1}=-\frac{m_b*v_b}{m}\\\\V_{f1}=-\frac{1.2kg*8.0m/s}{72.0kg}\\\\V_f=-0.13m/s

That is 0.13m/s due south.

because there is no friction, the man will maintain a constant velocity, so:

d=v*t\\t=\frac{d}{v}\\t=\frac{8m}{0.13m/s}\\\\t=62s

8 0
3 years ago
Planets move around the sun in elliptical orbits.<br> A. true<br> B. false
julia-pushkina [17]

Answer:All planets move in elliptical orbits, with the sun at one focus. This is one of Kepler's laws. The elliptical shape of the orbit is a result of the inverse square force of gravity. The eccentricity of the ellipse is greatly exaggerated here.

so it is true

Explanation:

4 0
3 years ago
Read 2 more answers
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