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Karajovic
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[Solved] Kinematics ratio problem
A force F produces an acceleration a when applied to a certain body. If the mass of the body is doubled and the force increased five-fold, what will be the effect on the following?
a. its acceleration
b. the distance the body travels in a given time
a. i know its acceleration is increased by 2.5 because if we have xa = 5f/2m, x=5/2
b. i know the distance is increased by 2.5, because everything else remains unchanged... but i can't seem to explain it in using equations... d = v1*t + 1/2at^2, if everything remains unchanged except a, we get: xd = 1/2(5/2a)1t^2 (assuming your velocity is 0 m/s?) i get that x = 5/4 but i know that's wrong, the distance can't be increased by 5/4...
Homework Statement
A force F produces an acceleration a when applied to a certain body. If the mass of the body is doubled and the force increased five-fold, what will be the effect on the following?
a. its acceleration
b. the distance the body travels in a given time
Homework Equations
The Attempt at a Solution
a. i know its acceleration is increased by 2.5 because if we have xa = 5f/2m, x=5/2
b. i know the distance is increased by 2.5, because everything else remains unchanged... but i can't seem to explain it in using equations... d = v1*t + 1/2at^2, if everything remains unchanged except a, we get: xd = 1/2(5/2a)1t^2 (assuming your velocity is 0 m/s?) i get that x = 5/4 but i know that's wrong, the distance can't be increased by 5/4...
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