What is the body weight if its impulse is 500 kg / at a speed of 72 km / h?
| September 3, 2021 | education
V = 72 km / h = 20 m / s.
p = 500 kg * m / s.
m -?
The momentum of a body p is the product of the body’s mass m by its speed of movement V: p = m * V.
Let us express the body mass: m = p / V.
V = 72 km / h = 72 * 1000 m / 1 * 60 * 60 s = 72000 m / 3600 s = 20 m / s.
m = 500 kg * m / s / 20 m / s = 25 kg.
Answer: body weight is m = 25 kg.
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