A body weighing 4 kg, initially at rest, travels 1000 m in 20 s. Find the force acting on the body.
| August 20, 2021 | education
To calculate the value of the force that acted on a previously resting body, we use the formula: S = a * t ^ 2/2 = F * t ^ 2 / 2m, whence we express: F = S * 2m / t2.
Values of variables: S – distance traveled (S = 1000 m); m – body weight (m = 4 kg); t – elapsed time (t = 20 s).
Calculation: F = S * 2m / t ^ 2 = 1000 * 2 * 4/20 ^ 2 = 20 N.
Answer: A force of 20 N. acted on a previously resting body.
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