Answer: The kinetic energy (KE) of an object is given by the formula:
KE = 1/2 * mass * velocity^2
Given that the mass of the object is 1.9 kg and the velocity is 7 m/s, we can substitute these values into the formula to calculate the kinetic energy:
KE = 1/2 * 1.9 kg * (7 m/s)^2
KE = 1/2 * 1.9 kg * 49 m^2/s^2
KE = 0.5 * 1.9 kg * 49 m^2/s^2
KE = 47.55 J (rounded to two decimal places)
So, the kinetic energy of the object is 47.55 Joules.