Is Energy a Scalar Or a Vector Physical Quantity?

Is energy a scalar or a vector physical quantity?

One Line Answer

Energy is a scalar quantity.

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Chapter 1: Force, Work, Energy and Power - Exercise 1.5 ii [Page 54]

Chapter 1 Force, Work, Energy and Power
Exercise 1.5 ii | Q 4 | Page 54

What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.

A man spends 7.4 KJ energy in displacing a body by 74 m in the direction in which he applies force in 2.5 s. Calculate the force applied.

Name the quality which is measured in eV

Name the force needed for circular motion. What is the direction of the force?

State the condition when the work done by the force is positive

Justify the statement. “Power can be expressed as the product of force and velocity.”

Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.

For the following scenario, state whether the work done by gravity is positive, negative, or zero.

A car in neutral gear is coming down the slope.