The body moves at a speed of 60 cm / s. Its impulse is 1.2 kg m / s. Find body mass.

Given:

v = 60 centimeters per second – the speed at which the body is moving;

p = 1.2 kg * m / s – body impulse.

It is required to determine m (kilogram) – body weight.

Let’s convert the units of measurement of speed from centimeters per second to meters per second:

v = 60 cm / s = 60 * 10-2 = 0.6 meters per second.

Then, to determine body weight, you must use the following formula:

p = m * v, hence:

m = p / v = 1.2 / 0.6 = 2 kilograms.

Answer: the mass of a moving body is 2 kilograms.