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LuckyWell [14K]
3 years ago
14

A rifle bullet leaves the barrel at 1500 meters per second. If it does not slow down or hit anything, how far can it travel in h

alf a second?
Physics
1 answer:
galben [10]3 years ago
7 0

Since we are dividing a second in 2, we can simply divide the amount of meters by 2.

1500/2=750

It travels 750 meters in half a second.

Hope this helps!


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Physics approach to study macromoelcues at nanoscales <br> in detail plx
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Answer:

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2 years ago
A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 75.0 J of work on the
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Answer:

The speed of the ball is 42.5 m/s

Explanation:

The initial kinetic energy of the ball is:

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The speed of the ball after leaving the bat is:

K_2=K_1+W_{nc}\\ \frac{1}{2}mV^2= 85.75 J + 75 J\\ (\frac{1}{2}mV^2)2=( 160.75 J)2\\ mV^2= 321.5 J\\ V^2= \frac{321.5 J}{0.140kg} \\ V=\sqrt{\frac{321.5 J}{0.140kg}}

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Using kinematic equation we can find the speed of the ball after being 25 m above the point of collision:

V_f^2-V^2=-2gh

V_f^2-(47.92 m/s)^2=-2*9.81m/s^2*25m

V_f^2=-2*9.81m/s^2*25m+(47.92 m/s)^2

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V_f=42.5m/s

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Answer:

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