If a car has a mass of 200 kilograms and produces a force of 500 N, how fast will the car accelerate?
2 answers:
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The components of the ball's position at time
are
The ball stops 18.0 m from where it began, so that
From the second equation, we can show that the ball travels for about seconds, which means it was initially thrown with a horizontal velocity of
Answer:
Explanation:
The work done on the object at rest is all converted into kinetic energy, so we can write
Or, re-arranging for v,
where
v is the final speed of the object
W is the work done
m is the object's mass
If the work done on the object is doubled, we have W' = 2W. Substituting into the previous formula, we can find the new final speed of the object:
So, the new speed of the object is .