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eimsori [14]
3 years ago
13

A car generates 2,552 N and weighs 2,250 pounds. what is the rate of acceleration

Physics
1 answer:
Lilit [14]3 years ago
6 0
Ans: a = 2.50 m/s^2

Explanation:
First convert the mass in its standard unit i.e. kilogram(kg):
2250 lbs = 1020.583kg

Next use Newton's Second law:
F = ma

Where F = 2552N
m = 1020.583kg

=> a = (2552/1020.583)
a = 2.50 m/s^2
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john is using a pulley to lift the sail on his sailboat. the sail weighs 150N and he must lift it at 4.0m. how much work must be
gogolik [260]

The work done on the sail is 600 J

Explanation:

The work done to lift the sail is equal to the gain in gravitational potential energy of the sail, therefore is:

W=mg\Delta h

where

m is the mass of the sail

g is the acceleration of gravity

(mg) is the weight of the sail

\Delta h is the change in height of the sail

In this problem we have

mg = 150 N (weight)

\Delta h = 4.0 m

Substituting, we find the work done:

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Answer:

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Explanation:

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The energy dissipated as the puck slides over the rough patch is given by;

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ΔE = ¹/₂ x 0.159 (2.35² - 4.75²)

ΔE = -1.355 J

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Alex Ar [27]

Answer:

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