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IceJOKER [234]
2 years ago
6

A 1-pound ball and a 100-pound ball are dropped from a height of 10 feet at the same time. in the absence of air resistance, ___

_______.
Physics
2 answers:
Elena L [17]2 years ago
7 0
The 100 ball would fall faster
professor190 [17]2 years ago
6 0

Answer:

They both will reach the ground at the same time. it will be a tie

Explanation:

Given

m_1 = 1 lb\\\\m_2 = 100 lb\\\\height,h = 10 ft\\\\

Known

acceleration due to gravity,g = 32.2 ft/s^2\\

Solution

Since the balls are dropped freely, their inital velocity u is zero.

let us find the final velocity of 1 pound ball

v^2=-u^2 + 2gh\\\\v^2 = 0^2 + 2 \times 32.2 \times 10\\\\v^2 = 196\\\\v = 25.4 ft/s

Note that in the equation is v^2=-u^2 + 2gh the mass of the object has no place. So, The final velocity is independent of the mass

so the final velocity of the 100 pound ball will also be 25.4 ft/s

Now let us find the time taken for the 1 pound ball

v = u + gt\\\\25.4 = 0+ 32.2t\\\\t = 0.788s

Since the equation v = u + gt does not depend on mass, the 100 pound ball will also reach the ground at time t = 0.788 s

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A helicopter is traveling with a velocity of 12 m/s directly upward.
Irina-Kira [14]

Answer:

H = 27.35 m

Explanation:

From projectile motion, we know that;

h = (v_o)²/2g

Where;

v_o = 12 m/s

g = 9.8 m/s²

Thus;

h = 12²/(2 × 9.8)

h = 144/19.6

h = 7.35 m

Now, we are told that when the man is 20 m above the pillow, he lets go of

the rope.

Thus, greatest height reached by the man above the ground is;

H = 20 + h

H = = 20 + 7.35

H = 27.35 m

5 0
2 years ago
PLZZ HELP ASAP!!
Nimfa-mama [501]
Modern space suits augment the basic pressure garment with a complex system of equipment and environmental systems designed to keep the wearer comfortable, and to minimize the effort required to bend the limbs, resisting a soft pressure garment's natural tendency to stiffen against the vacuum. A self-contained oxygen supply and environmental control system is frequently employed to allow complete freedom of movement, independent of the spacecraft.
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8 0
3 years ago
What burns quicker, white or colored candles?
VashaNatasha [74]
White is a hotter color so it burns faster. :)
3 0
2 years ago
During its lifespan, what characteristics of the sun will change
4vir4ik [10]
During its lifepsan, the sun's core would keep contracting and heating up.

The temperature will keep increasing to the point where the temperature outside the core will get to hydrogen fusion temperatures.
The sun will grow in surface and eventually became the Red Giant
6 0
2 years ago
Read 2 more answers
A 2.0-kilogram ball rolls down a ramp. if the ball accelerates at a rate of 12 m/s2, the net force causing the acceleration is:
ehidna [41]

Answer:

D

Explanation:

f = ma

2 x 12 = 24

answer could differ since it's rolling down a ramp. if an angle is given our approach differs.

7 0
1 year ago
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