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ExtremeBDS [4]
4 years ago
14

Neglecting air resistance, when does a struck baseball accelerate downward at a rate of 9.8 m/s2?

Physics
2 answers:
olga2289 [7]4 years ago
3 0
A baseball is accelerated downward at 9.8 m/s^2 when the only vertical force acting upon the baseball is gravity.
creativ13 [48]4 years ago
3 0

Answer:

Only at the precise moment when it has reached maximum height.

Explanation:

It's the precise moment when it accelerates downward.

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aleksandrvk [35]

Answer:

effort force: The force used to move an object over a distance. resistance force: The force which an effort force must overcome in order to do work on an object via a simple machine. ideal mechanical advantage: The factor by which a mechanism multiplies the force put into it.

Explanation:

5 0
3 years ago
The ability of a material to bend without breaking
My name is Ann [436]
Im pretty sure the answer if elasticity
5 0
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A proton with a speed of 3.000×105 m/s has a circular orbit just outside a uniformly charged sphere of radius 7.00 cm. What is t
Rama09 [41]

To solve this problem we will apply the principles of energy conservation. The kinetic energy in the object must be maintained and transformed into the potential electrostatic energy. Therefore mathematically

KE = PE

\frac{1}{2} mv^2 = \frac{kq_1q_2}{r}

Here,

m = mass (At this case of the proton)

v = Velocity

k = Coulomb's constant

q_{1,2} = Charge of each object

r= Distance between them

Rearranging to find the second charge we have that

q_2 = \frac{\frac{1}{2} mv^2 r}{kq_1}

Replacing,

q_2 = \frac{\frac{1}{2}(1.67*10^{-27})(3*10^5)^2(7*10^{-2})}{(9*10^9)(1.6*10^{-19})}

q_2 = 3.6531nC

Therefore the charge on the sphere is 3.6531nC

4 0
3 years ago
14. Name the 3 primary causes for the expected mass migration due to Climate<br> Change.
Step2247 [10]

Answer: sea-level rise, extreme weather events, and drought, and water scarcity.

Explanation:

6 0
3 years ago
1) A person riding their bike on a nice cloudy day travels 50 meters in 20 seconds.
Rasek [7]

Answer:

5.59

Explanation:

50 meters in 10 seconds is 11.18, which is an easy way to remember. Just divided by 2

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3 years ago
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