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2 years ago

How do mass and speed affect kinetic energy?

2 answers:

6 0

The mass affects the kinetic energy because the more the mass the more energy is given to the object and the speed<span> affects by making it go faster and longer, so whenever speed goes up so does energy.</span>

Nikolay [14]2 years ago

4 0

Here is your answer:

Kinetic energy is when an object or person is moving.

Ex: A car going down the street.

Mass effects kinetic energy because mass is weight and weight will make an object go slower which lowers the kinetic energy and rises the potential energy (that's when a object is at rest or not moving)

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A force of 185 n is needed to keep a small boat moving at 2.39 m/s. what is the power required to keep the boat moving at the st

mash [69]

We know, P = F . ΔV

P = 185 * 2.39 = 442.15 watt

5 0

2 years ago

Jonah is trying to move his 22-kg desk by pushing on it with a force of 130 N, but his brother is leaning on it with a downward

Dafna11 [192]

Answer:

0.54

Explanation:

Draw a free body diagram. There are 5 forces on the desk:

Weight force mg pulling down

Applied force 24 N pushing down

Normal force Fn pushing up

Applied force 130 N pushing right

Friction force Fnμ pushing left

Sum of the forces in the y direction:

∑F = ma

Fn − mg − 24 = 0

Fn = mg + 24

Fn = (22)(9.8) + 24

Fn = 240

Sum of the forces in the x direction:

∑F = ma

130 − Fnμ = 0

Fnμ = 130

μ = 130 / Fn

μ = 130 / 240

μ = 0.54

6 0

2 years ago

A boy weighs 400N. what is his mass?

Basile [38]

≈40.8kg

this is to take up space

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40.8

400

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40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

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4 0

3 years ago

Read 2 more answers

Calculate the potential energy of a 20-kg sled at 40 meters

irakobra [83]

Answer: 7840N

Explanation:

Given that

Potential energy = ?

Mass of sled = 20-kg

Distance = 40 meters

Acceleration due to gravity = 9.8m/s^2

Recall that potential energy is the energy possessed by a body at rest

i.e potential energy = mass m x acceleration due to gravity g x distance h

P.E = mgh

P.E = 20kg x 9.8m/s^2 x 40m

P.E = 7840N

Thus, the potential energy of the sled is 7840N

5 0

3 years ago

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Which of the following paths, shown below, might light follow when passing from below water into the air?

Lelu [443]

B Because I am I really really really really really….. be it is B i am latina

6 0

2 years ago