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A bowling ball with a negative initial velocity slows down as it rolls down the lane toward the pins Is the bowling ball's acceleration positive or negative as it rolls toward the pins?
Wiki User
∙ 14y ago
In these situations, you usually define one direction as being positive and the other as negative. In this problem, the question does this for us: it clearly tells us that when the ball is moving down the lane, its velocity is negative. "Down the lane" is the negative direction.
Average acceleration is give by
a_ave = Δv/Δt
where Δv is a change in velocity and Δt is elapsed time.
Δv = v_final - v_initial
In this problem, the ball "slowed down," but did not change direction. This means that the NUMBER associated with "v" got smaller (5 ... 4 ... 3 ...) but the SIGN (-) did not change.
I hope it makes sense, then, that "v_final" was a smaller (slower) number with a negative sign (moving down the lane) while "v_initial" was a larger (faster) number with a negative sign (moving down the lane).
The subtraction of a large negative number from a small one (like, for instance, -4 - [-10]) is a POSITIVE number whose value is given by the difference (+6).
So Δv is positive, and Δt is ALWAYS positive (no matter what).
Therefore a_ave, the quotient of two positive numbers, will be positive.
Wiki User
∙ 14y ago
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When did High Velocity Bowling happen?
High Velocity Bowling happened in 2007.
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When was High Velocity Bowling created?
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The earth is in orbit about the sun. It plods along in its orbit at close to 30 kilometers per second. But it is not moving in a straight line, as you know. It is following the curve of its orbital path. Earth's inertia and the gravitational attraction between the sun and the Earth are in equilibrium here, and though its speed is constant, its direction of travel is actually changing from moment to moment. That means its velocity is constantly changing. (Note that the actual speed of earth varies a bit through its orbit, but from moment to moment, the change of speed is miniscule.)Speed is distance (displacement) per unit of time. In this case, we have 30 km/sec for the earth. But when we consider velocity, we find that velocity is speed plus a direction vector. Though the speed of the earth is constant in its orbit, it is constantly changing direction and following its orbital path. Earth has a constant speed in its orbit, but its velocity is constantly changing because the direction it is traveling changes from moment to moment.
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The second law of motion states that the acceleration of the an object depends on the mass of the object and the size of the force acting on it a good example is bowling because the acceleration of the bowling ball hitting the pins are hitting the shape and the size of it. And the force acting on it is the bowling ball and bowling pin that is an example of the second law of motion.
Does a bowling ball have more force than a feather?
Well according to the equation Force = Mass x Acceleration. A bowling ball has more mass than a feather but it all depends on how much acceleration each is undergoing. Potentially a feather can have more force (if the bowling ball has an acceleration of zero, then there is no force being produced, and if the feather is accelerating at any speed greater than zero, thentechnicallyit has more force)
Where would a bowling ball and a napkin fall with the same acceleration?
In a vacuum chamber. C. On the moon.
