2 years ago

A race car speeds up with an acceleration of 10 m/s2 for 21 s. If its final velocity is 210 m/s, find its initial velocity.

Physics

1 answer:

Gennadij [26K]2 years ago

6 0

Answer:

answer is 0m/ sec

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A car's engine generates 100,000W of power as it exerts a force of 10,000N . How long does it take the car to travel 100m ?

kompoz [17]

Answer: 10 s

Explanation:

Given

Engine generates $100,000\ W$ power

Force exerts $F=10,000\ N$

Distance traveled $d=100\ m$

work done is given by

$W=F\cdot d\\W=10,000\times 100\\W=10^5\ J$

Also, Energy is given as

$\Rightarrow E=P\cdot t$

Insert the values

$\Rightarrow 10^6=100,000\times t\\\\\Rightarrow t=\dfrac{10^6}{10^5}\\\\\Rightarrow t=10\ s$

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1 year ago

Unweathered rock that underlies soil is subsoil. True False

Maru [420]

False.

Unweathered rock that underlies soul is known as bedrock.

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2 years ago

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What is the equation of the line that is perpendicular to y= -4x +5 and passes through the point (4,-3)?

Ostrovityanka [42]

Y=4x-19

Perpendicular because it has an opposite reciprocal slope

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2 years ago

Scavengers are organisms that help clean a habitat by feeding on dead or rotting flesh. They help break down the remains left be

vagabundo [1.1K]

Answer:

I think no B

if wrong correct me pls

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2 years ago

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insens350 [35]

Answer:

$-\frac{1}{2}$

Diverging lens

Explanation:

Given parameters:

Power of lens = -2.0D

Unknown:

Focal length = ?

Solution:

The power of lens is the reciprocal of the focal length;

P = $\frac{1}{f}$

where f is the focal length

f = $\frac{1}{P}$ = $-\frac{1}{2}$

The lens is a diverging lens

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2 years ago