Find mass when kinetic energy is 1.6 J and velocity is 0.2 m/s

4kg

Explanation:

Given parameters:

Kinetic energy  = 1.6J

Velocity  = 0.2m/s

Unknown:

Mass of the body = ?

Solution:

The kinetic energy of a body is the energy due to the motion of the body.

It is mathematically expressed as;

  Kinetic energy =  m v²

m is the mass

v is the velocity

          1.6  =    x 0.2 x v²  

          1.6  = 0.1v²

         v²   = 16

          v  = 4kg

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)