Translate to English please
From that list of choices, choice 'B' is the only example of a plane,
but it doesn't 'describe' it at all.
Answer:
Explanation:
<h3>for average velocity we use this formula V Vavg =V1+V2<u>
<em>÷</em></u>
<u>2</u></h3>
Answer:
20 J
Explanation:
Kinetic energy is given as half of the product of mass and the square of velocity of an object:
KE = 
where m = mass = 40 kg
v = velocity = 1 m/s
Hence, Mary's kinetic energy is:
KE = 
KE = 20 * 1 = 20 J
She has a kinetic energy of 20 J.