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notsponge [240]
3 years ago
10

True or false ??

Physics
2 answers:
galben [10]3 years ago
6 0
Well, gravity's acceleration is -9.81 m/s^2 so false.
Vinvika [58]3 years ago
3 0
False, because objects have different masses. Remember, mass determines acceleration
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Suppose a wheel with a tire mounted on it is rotating at the constant rate of 3.33 times a second. A tack is stuck in the tire a
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Answer: 6.47m/s

Explanation:

The tangential speed can be defined in terms of linear speed. The linear speed is the distance traveled with respect to time taken. The tangential speed is basically, the linear speed across a circular path.

The time taken for 1 revolution is, 1/3.33 = 0.30s

velocity of the wheel = d/t

Since d is not given, we find d by using formula for the circumference of a circle. 2πr. Thus, V = 2πr/t

V = 2π * 0.309 / 0.3

V = 1.94/0.3

V = 6.47m/s

The tangential speed of the tack is 6.47m/s

7 0
3 years ago
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8 0
2 years ago
What is the change in thermal energy E if the coefficent of kinetic friction between the box and floor is .4 , the distance the
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This question can be solved using the concept of friction energy.

The thermal energy change is b "258.4 J".

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where,

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<u>E = 258.4 J</u>

Learn more about friction energy here:

brainly.com/question/1343045?referrer=searchResults

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