Ask question

Ask question

All categories

4 years ago

8

Two solid balls (one larger, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and wh

ich the least?
(a) the larger ball has the greatest, the small ball has the least.
(b) the small ball has the greatest, the larger ball has the least.
(c) the cylinder has the greatest, the small ball has the least.
(d) both balls have the same greater speed, the cylinder has the least.

1 answer:

makvit [3.9K]4 years ago

6 0

The answer is c hope this clarifies

You might be interested in

50 POINTS! A Boy throws a ball horizontally a distance of 22m downrange from the top of a tower that is 20.0m tall. What is his

DerKrebs [107]

The ball's horizontal and vertical velocities at time $t$ are

$v_x=v_{xi}$

$v_y=v_{yi}-gt$

but the ball is thrown horizontally, so $v_{yi}=0$ . Its horizontal and vertical positions at time $t$ are

$x=v_{xi}t$

$y=20.0\,\mathrm m-\dfrac g2t^2$

The ball travels 22 m horizontally from where it was thrown, so

$22\,\mathrm m=v_{xi}t$

from which we find the time it takes for the ball to land on the ground is

$t=\dfrac{22\,\rm m}{v_{xi}}$

When it lands, $y=0$ and

$0=20.0\,\mathrm m-\dfrac{9.8\frac{\rm m}{\mathrm s^2}}2\left(\dfrac{22\,\rm m}{v_{xi}}\right)^2$

$\implies v_i=v_{xi}=11\dfrac{\rm m}{\rm s}$

7 0

3 years ago

Speed1=20 m/s. time1=5sec

lina2011 [118]

Answer:

<h2><em><u>2</u></em><em><u>1</u></em><em><u>.</u></em><em><u>2</u></em><em><u>5</u></em><em><u> </u></em><em><u>m</u></em><em><u>/</u></em><em><u>s</u></em></h2>

Explanation:

<h2><em>AVERAGE</em><em> </em><em>S</em><em>P</em><em>E</em><em>E</em><em>D</em><em>=</em></h2>

<em> $= \frac{s1 t1+ s2t2 + s3t3}{t1 + t2 + t3}$ </em>

<em> $= \frac{20 \times 10 + 30 \times 5 + 15 \times 5}{10 + 5 + 5}$ </em>

<em> $= \frac{200 + 150 + 75}{20}$ </em>

<em> $= \frac{425}{20}$ </em>

<em> $= 21.25 ms$ </em>

4 0

2 years ago

Which of the following in the list is the best conductor: plastic, metal, styrofoam, or glass?

tensa zangetsu [6.8K]

Answer:

Metal

Explanation:

3 0

3 years ago

Read 2 more answers

Which of the following statements about electrons is not true?

Evgen [1.6K]

Answer:

A

Explanation:

Electrons do not orbit the nucleus rather like the planets orbiting the Sun. Electrons do not orbit they are simply used for a microscope, laser, radiation therapy, and electronics.

8 0

4 years ago

A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, with the open end o

Misha Larkins [42]

Answer: $P_{bulb}=99.11\ kPa$

Explanation:

Given

When the bulb is squeezed then liquid level rises to height h i.e. pressure decreases inside the bulb which causes rises in the tube

for common elevation i.e. at liquid level pressure must be equal therefore

$P_{bulb}+\rho gh=P_{atm}$

$P_{bulb}=1.013\times 10^5-1490\times 9.8\times h$

for $h=0.15\ m$

$P_{bulb}=1.013\times 10^5-1490\times 9.8\times 0.15$

$P_{bulb}=101.3\times 10^3-2.1903\times 10^3$

$P_{bulb}=99.11\ kPa$

for $h=0.1\ m$

$P_{bulb}=101.3\times 10^3-1.4602\times 10^3$

$P_{bulb}=99.83\ kPa$

8 0

3 years ago