Does mass affect the final velocity of an object if the object begins with a high initial velocity? Why or why not?

1 answer:

5 0

The speed of a falling object is not affected by the mass of the object ... This means that if both accelerate at the same rate, then the force acting on objects of different ... time and initial velocity andnot dependent on the mass of the object at all

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Why is it important to use placebos and a double-blind approach in some studies

viktelen [127]

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3 years ago

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Sonbull [250]

Answer:

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Explanation:

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Ann (mass 50 kg) is standing at the left end of a 15-m-long, 500 kg cart that has frictionless wheels and rolls on a frictionles

ivanzaharov [21]

Answer:

13.5 m

Explanation:

M = Mass of cart = 500 kg

m = Ann's mass = 50 kg

$v_m$ = Velocity of Ann relative to cart = 5 m/s

$v_M$ = Velocity of Cart relative to Ann

As the linear momentum of the system is conserved

$Mv_M+mv_m=0\\\Rightarrow v_M=-\frac{mv_m}{M}\\\Rightarrow v_M=-\frac{50\times 5}{500}\\\Rightarrow v_M=-0.5\ m/s$

Time taken to reach the right end by Ann

$Time=\frac{Distance}{Speed}\\\Rightarrow Time=\frac{15}{5}=3\ s$

Distance the cart will move in the 3 seconds

$Distance=Speed\times Time\\\Rightarrow Distance=-0.5\times 3=-1.5\ m$

The negative sign indicates opposite direction

Movement of Ann will be the sum of the distances

$15+(-1.5)=13.5\ m$

The net movement of Ann is 13.5 m

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What are the characteristics of high energy wave lengths

Darya [45]

The characteristics of high energy wave length are:
- High Frequencies
- Short wave length
And in term of color, it will be located on the red spectrum.

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SashulF [63]

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$\Delta W = \Delta KE$