3 years ago

Work and energy have the same units because

Physics

1 answer:

yulyashka [42]3 years ago

8 0

Answer:

A. the words "work" and "energy" are interchangeable.

Explanation:

Work and kinetic energy are interchangeable, so they are the same, ie. they have the same units. Your work can give kinetic energy to a body and a body with kinetic energy can produce work

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A compact car, mass 660 kg, is moving at 1.00 ✕ 102 km/h toward the east. The driver of the compact car suddenly applies the bra

Maslowich

Answer: $59.43\times 10^3 kg-m/s$

Explanation:

Given

mass of car $m=660 kg$

Initial velocity of car $=102 km/h\approx 28.33 m/s$ towards east

Time taken to stop $t=2.1 s$

Force exerted $F_{avg}=4.8\times 10^3 N$

change in momentum is given by impulse imparted to the car

$Impulse(J)=-F\cdot t$

$J=-4.8\times 10^3\times 2.1$

$J=-59.49\times 10^3 kg-m/s$

negative Sign indicates that impulse is imparted opposite to the direction of motion

magnitude of momentum $J=59.49\times 10^3$

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Answer:

I think it is 5N.

Explanation:

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Which statement describes characteristics of a concave lens?

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I dont know what the statements are but concave lens are thinner in the middle which cause light to diverge or scatter

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A bus that was moving at a high speed stopped suddenly. One of

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2 years ago

Define s.i unit of force explanation

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<h3><u>Answer</u> :</h3>

◈ As per newton's second law of motion, Force is defined as the product of mass and acceleration $.$

Mathematically,

$\dag\:\boxed{\bf{\purple{F=ma}}}$

Unit of mass : kg

Unit of acceleration : m/s²

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Unit of force ➠ <u>kg m/s²</u>

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