The force acting on the body is 10 N, its duration is 0.5 s. Determine the body weight if its speed is 36 km / h.
| June 15, 2021 | education
F = 10 N.
t = 0.5 s.
V0 = 0 m / s.
V = 36 km / h = 10 m / s.
m -?
According to 2 Newton’s Law, the mass of a body m is determined by the ratio of the force F, which acts on the body, to the acceleration of the body’s motion a, which is imparted by this force: m = F / a.
The acceleration of the body a will be expressed by the formula: a = (V – V0) / t, where V, V0 are the final and initial velocity of the body, t is the time of change in the velocity of the body.
The formula for determining body weight m will take the form: m = F * t / (V – V0).
m = 10 N * 0.5 s / (10 m / s – 0 m / s) = 0.5 kg.
Answer: the body has a mass m = 0.5 kg.
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