All categories

2 years ago

A shell is launched with an initial velocity at an angle of 40.0° above horizontal

Physics

1 answer:

olasank [31]2 years ago

7 0

Answer:

122.17 m/s

Explanation:

x cos 40 = horizontal velocity

1500 m / x cos 40 = time in the air = 1958.11 / x

x sin 40 = vertical velocity

find when shell vertical velocity = 0 (this is max height....1/2 way through its flight) , the time when it hits the ground will be twice this...

0 = x sin 40 - 9.8 t

t = x sin40 / 9.8 time in the air is twice this = .13118 x

Equate the two times from above to solve for x

1958.11/ x = .13118 x

x = 122.17 m/s

You might be interested in

The force of gravity is responsible for continuously changing the ______ of a satellite.

MissTica

The force of gravity will change the satellites direction, and therefore its velocity. To complete the sentence "The force of gravity is responsible for continuously changing the velocity of a satellite." Thank you for posting your question here at brainly. I hope it helps.

3 0

3 years ago

Read 2 more answers

If a ball is rolling at a velocity of 1.5 meters per second and has a momentum of 10.0 kg meters per second what is the mas6of t

g100num [7]

The mass of the ball is 6.67 kg

Explanation:

The momentum of an object is given by:

$p=mv$

where

p is the momentum

m is the mass of the object

v is its velocity

It must be noted that momentum is a vector quantity, so it has both magnitude and direction (but here only the magnitude is given).

For the ball in this problem, we have:

v = 1.5 m/s is its velocity

p = 10.0 kg m/s is its momentum

Solving the formula for m, we find the mass of the ball:

$m=\frac{p}{v}=\frac{10}{1.5}=6.67 kg$

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

6 0

3 years ago

A circuit contains two light bulbs connected in parallel. What would happen to the brightness of each light bulb if two more lig

DENIUS [597]

Answer:

The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.

Explanation:

Brightness of the bulb is given as

$P= \frac{V^2}{R}$

since all bulbs are connected in parallel so here voltage across each bulb will remain same and resistance of each bulb is "R"

So here power across each bulb will remain the same always.

So there will be no effect on the power or brightness of bulb.

Now we also know that equivalent resistance is given as

$\frac{1}{R_{eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3}............$

$R_{eq} = \frac{R}{n}$

so here equivalent resistance will decrease on adding more resistance in parallel.

so correct answer will be

The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.

6 0

3 years ago

Read 2 more answers

Best answer get BRAINLEIST

Lilit [14]

I think it's the last one.

Hope I helped

7 0

3 years ago

Difference between uniform motion and non uniform motion

photoshop1234 [79]

Answer:

Uniform motion is a type of motion that is characterized as the motion of an object wherein the object moves in a straight line and its velocity remains unchanged along that line, regardless of the duration of time, as it occupies equal distances at equal time interval and Non-uniform motion is described as the motion of an object wherein the object moves at different speeds and does not cover the same distance at equal time intervals, regardless of the duration of the time interval.

5 0

3 years ago

Read 2 more answers