Using the formula: V = 5 + 4t, determine the body impulse in 0.5 s if the body weight is 6 kg.
| December 7, 2020 | education
The equation of speed in general form: v = v0 + at, where a is the acceleration, v0 is the initial speed.
v = 5 + 4t, so v0 = 5, a = 4. After 0.5s v = 5 + 4 × 0.5 = 7.
The momentum of such a body is p = mv = 6 × 7 = 42.
Answer: 42 kg × m / s.
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