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Calculate the force required to impart a car a velocity of `30m//s`, in 10 seconds. The mass of the car is `1500kg` |
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Answer» Here, Mass, m = 1500 kg Let us calculate the value of acceleration by using the first equation of motion. Now, Initial velocity, u = 0 (Car starts from rest) Final velocity, v = 30 m/s And Time taken, t = 10s Now, putting these values in the equation: v=u+at We get, `30 = 0+axx 10` 10a=30 `a=30/10m//s^(2)` or Acceleration,a=3m/`s^(2)` Now, putting m=1500 kg and a=3 m/`s^(2)` in equation: `F=mxxa` We get, F= 1500 `xx` 3 N = 4500 N Thus, the force required in this case is of 4500 newtons. |
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