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umka2103 [35]
3 years ago
12

Trying out for the big leagues, you throw a 149 gram baseball at a speed of 85.0 miles per hour. What is the ball's kinetic ener

gy (j) ?
Physics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

K.E=107.56J

Explanation:

Given data

v=85 miles/hour

convert it to meter per second we get

v=37.9984 meter/second

m (baseball mass)=149 gram

convert it to Kg we get

m=0.149 kg

K.E (Kinetic Energy)=?

Solution

K.E=\frac{1}{2}mv^{2}\\  K.E=\frac{1}{2} *(0.149)* (37.9984)^{2}\\ K.E=107.56J

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a boy Held a book of weight 50 newton’s in his fully outstretched hand, at a distance of 50 cm away calculate the moment of forc
miss Akunina [59]

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the moment of force is 25 Nm.

Explanation:

Given;

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How to do the equation p1v1 = p2v2 as an equation layed out like:
KonstantinChe [14]

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A tumbleweed rolls from x equals 25.6 m to x equals -14.4 m in 7.90 seconds what was its average velocity
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Answer:

5.06 m/s

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