m = 10 g,
v = 36 km / h.
To find. Ek.
Let’s write down the formula for kinetic energy.
Eк = (mv ^ 2) / 2.
Let’s give the units of measurement in the SI system.
m = 10 g = 0.01 kg.
v = 36 km / h = 10 m / s.
Let’s calculate the kinetic energy by the formula.
Ek = (0.01 * 100) / 2 = 0.5 J
Let’s check the units.
Ek = 1 (kg * (m / s) ^ 2) = 1kg * 1m ^ 2 / 1c ^ -2 = 1H * 1m = 1J.
Answer: The kinetic energy of a body weighing 10 g at a speed of 36 km / h is 0.5 J.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.