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3 years ago

Average velocity equals distance travelled divided by speed time

Physics

2 answers:

Gnom [1K]3 years ago

6 0

Answer: It’s Time

Explanation: Did it on USA test prep

Ostrovityanka [42]3 years ago

5 0

Answer: The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time

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A diamond with a mass of 45 g hangs motionless from a chain. what is the upward force of the chain on the diamond?

Oksi-84 [34.3K]

The upward force of the chain on the diamond would be the tension in the chain, and this tension would have to support the weight of the 45g that hangs from the chain.

mass = 45 g = 45/1000 kg = 0.045kg

Weight = mg = 0.045 * 10 ≈ 0.45N, g ≈ 10 m/s²

So the upward force is ≈ 0.45N.

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3 years ago

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poizon [28]

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3 years ago

When a golf club hits a 0.0459 kg ball at rest, it exerts a 2380 N force for 0.00100 s. What is the speed of the ball afterwards

aksik [14]

Answer:

51.85m/s

Explanation:

Given parameters:

Mass of ball = 0.0459kg

Force = 2380N

Time taken = 0.001s

Unknown:

Speed of the ball afterwards = ?

Solution:

To solve this problem, we use Newton's second law of motion:

F = m x $\frac{v - u}{t}$

F is the force

m is the mass

v is the final velocity

u is the initial velocity

t is the time taken

2380 = 0.0459 x $\frac{v- 0}{0.001}$

0.0459v = 2.38

v = 51.85m/s

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3 years ago

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Which of the following is true for the angular momentum of rotating bicycle wheel

Blababa [14]

Is the following sentence true or false? Newton's first law does object's mass concentration and its axis of rotation increases, its rotational inertia The bicycle wheels at rest have no angular momentum, and the bicycle will fall over easily.

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3 years ago

CN you help me with this question?

qaws [65]

25% i believe because if were talking 50 percent half it would be 25.

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