Question

help me please to do these three questions​

Answer 1

JOULE-The joule is a derived unit of energy in the International System of Units. It is equal to the energy transferred to an object when a force of one newton acts on that object in the direction of the force's motion through a distance of one metre.

NEWTON -The newton (symbol: N) is the SI unit of force. It is named after Sir Isaac Newton because of his work on classical mechanics. A newton is how much force is required to make a mass of one kilogram accelerate at a rate of one metre per second squared.

NANOSECOND -one thousand-millionth of a second.

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Answer 2

JOULE- Work done = Force x displacement

1 Joule is the SI unit of work.

1 Joule refers to amount of work done when a force of 1 Newton displaces an object by 1 meter in the direction of force applied.

1 J = 1 N x 1m

NEWTON- A newton (N) is the international unit of measure for force. One newton is equal to 1 kilogram meter per second squared.

1 Newton is the SI unit of force.

1 N = 1Kg-m/ s^2

NANOSECOND- A nanosecond (ns) is an SI unit of time equal to one billionth of a second, that is, 1/1,000,000,000 of a second, or 10−9 seconds.

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