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Sati [7]
3 years ago
8

A ball is tied to a string and whirled in a horizontal circle at a constant 4 revolutions per second. Categorize the following a

ccording to whether they are 0 in value, constant in value, or change:
Physics
1 answer:
Stella [2.4K]3 years ago
6 0
The velocity of the ball is constantly changing because its direction is changing.
The acceleration of the ball is constant and perpendicular to the velocity, towards the center of the circle. The force is also in this direction and constant.
The displacement after one complete revolution is 0.
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The volume of an object as a function of time is calculated by v = At3+B÷t where t is time measured in seconds and v is in cubic
madam [21]

Answer:

A = m³/s³ = [L]³/[T]³ = [L³T⁻³]

B = m³s = [L³T]

Explanation:

We have the equation:

V = At³ + B/t

where, the dimensions of each variable are as follows:

V = m³ = [L]³

t = s = [T]

substituting these in equation, we get:

m³ = A(s)³ + B/s

for the homogeneity of the equation:

A(s)³ = m³

<u>A = m³/s³ = [L]³/[T]³ = [L³T⁻³]</u>

Also,

B/s = m³

<u>B = m³s = [L³T]</u>

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3 years ago
A: How far did she travel? <br><br><br><br> B: How long did she take?
allochka39001 [22]
A. 60 miles
B. 5 hours

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How does surface area affect the amount of air resistance an object experiences?
Ymorist [56]
The greater the cross-sectional area of an object, the greater the amount of air resistance it encounters since it collides with more air molecules. ... It will have to accelerate for a longer period of time before there is enough upward air resistance to balance the downward force of gravity.
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Describe an object’s motion when balanced forces act on it
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Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal
3 0
3 years ago
Read 2 more answers
Please need help with this
NeTakaya

<u>Note that</u>:

The gravitational potential energy = mgh

where m: is the mass, g: the acceleration due to the gravity and h is the height from the earth surface

Then, we can increase the gravitational potential energy by increasing the mass or the height from the earth surface

<u>In our question</u>, we can increase the gravitational potential energy by

<u>A) Strap a boulder to the car so that it wights more.</u>

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3 years ago
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