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Vesna [10]
2 years ago
11

What is the instantaneous speed of the bird at t=6s?

Physics
2 answers:
crimeas [40]2 years ago
8 0

Answer: 0 m/s

Explanation:

AysviL [449]2 years ago
3 0

Answer:

Put the rest of the equation

Explanation:

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A truck’s engine produces 20,000 N of force. It dumps its load and its mass is reduced to 10,000 kg. What is the acceleration of
spayn [35]

Explanation:

If F = m*a, we can easily solve for a.

a = 20000/10000

7 0
3 years ago
A bobsledder pushes her sled across horizontal snow to get it going, then jumps in. After she jumps in, the sled gradually slows
anastassius [24]

Answer:

In the vertical direction the acting forces are the normal force and the weight of the bobsleder plus the sled. In the horizontal direction the acting force is the friciton force.

Explanation:

Hi there!

Please, see the attached figure for a graphic representation of the forces acting on the sled after the bobsleder jumped in.

In the vertical direction, the acting forces are the normal force (N) and the weight of the sled plus the bobsledder (W).

Since the sled is not being accelerated in the vertical direction, the sum of forces in that direction is zero:

∑Fy = W + N = 0 ⇒ W = N

The weight is calculated as follows:

W = (mb + ms) · g

Where:

mb = mass of the bobsleder.

ms = mass of the sled.

g = acceleration due to gravity.

In the horizontal direction the only acting force is the friction force (Fr). The friction force is calculated a follows:

Fr = N · μ

Where:

N = normal force.

μ = kinetic friction coefficient.

Since N = W = (mb + ms) · g

Fr = (mb + ms) · g · μ

If we want to find the acceleration of the sled after the bobsleder jumps in, we can apply Newton's second law:

∑F = m · a

Where "a" is the acceleration and "m" is the mass of the object (in this case, the mass of bobsleder plus the mass of the sled).

∑F = Fr =  (mb + ms) · g · μ =  (mb + ms) · a

(mb + ms) · g · μ =  (mb + ms) · a

Solving for "a":

g · μ = a

3 0
3 years ago
You are trying to catch the mutated mouse and you have a rope
Wittaler [7]

Answer:

none no work cuz no motion

Explanation:

GOOD LUCK

4 0
2 years ago
Epidemiologists sometimes us computers and artificial intelligence (AI) to help them analyze data. Why would this be helpful?
Andru [333]
An epidemiologist is a person who study’s or is an expert in a branch Of medicine the deals with distribution, patterns, and determinants of health and disease conditions. The use of AI would help them to be able to track diseases in growth and degrees on a large scale and in a real time way
6 0
2 years ago
Which state of matter has a definite volume but a variable shape?
DENIUS [597]

Liquid. Liquids have a definite volume but take up the shape of whatever they are in.

Happy to help!

4 0
3 years ago
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