Question

which of following scalar :
A displacement
B kinetic energy
C couple
D momentum ​

Answer 1

To find:

The scalar quantity among the following given options:

• Displacement
• Kinetic Energy
• Couple
• Momentum

Solution:

First, let's define a scalar quantity:

• A scalar quantity is a physical quantity represented with only magnitude and no direction.

• For example , speed is a scalar quantity.

• But Velocity is not a scalar quantity , because it has both magnitude as well as directions. In that case , it will be called a vector quantity.

With this definition in mind , the scalar quantity among the given options is kinetic energy.

• Rest others are vector quantities like displacement , couple and Momentum.

Important things to remember:

• Kinetic Energy is a type of mechanical energy possessed by a body by the virtue of its motion.

• KE = ½mv² , where m is mass and v is speed.

$\star$ Hope It Helps.

Answer 2

Answer:

(B) kinetic energy

Explanation:

Hope it's helpful