you toss a bowling ball straight up into the air with a speed of 2.1. how long does it take the bowling ball to reach its highest point?

Answers

Answer 1

Answer: I am going to assume 2.1 metres per second and that we're rounding acceleration due to gravity to -10 metres per second squared. At the highest point, velocity is going to be 0. v= intial velocity + acceleration*time, sub in 0 for velocity, 2.1 for initial velocity and -10 for acceleration to get 0= 2.1-10t. Now solve for t. t=0.21 seconds.

Answer 2

Answer:

Answer:

0.2 s

Explanation:

Apex; good luck all! :)

Further Explanation

Gravity or gravity is the attraction that occurs between all particles that have mass in the universe. Sun's gravity causes celestial bodies to be in their respective orbits around the sun. Modern physics describes gravity using Einstein's Theory of General Relativity, but Newton's simpler universal law of gravity is a fairly accurate estimate in many cases.

For example, the earth which has a very large mass produces a very large gravitational force to attract objects around it, including living things, and objects that exist on earth. This gravitational force also attracts objects in space, such as the moon, meteors, and other celestial bodies, including man-made satellites.

Kinetic energy or motion energy (also called kinetic energy) is the energy possessed by an object because of its motion.

The kinetic energy of an object is defined as the effort needed to move an object with a certain mass from rest to a certain speed.

The kinetic energy of an object is equal to the amount of effort required to express its speed and rotation, starting from the others.

Modern research in the theory of gravity began with the work of Galileo Galilei in the late 16th century and early 17th century. With the results of his experiments dropping the ball from the Tower of Pisa, and then also measuring the ball sliding through the slope, Galileo showed that the magnitude of gravitational acceleration was the same for all objects. This is a big advance from Aristotle's earlier belief that heavier objects have greater gravitational acceleration.

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Grade: High School

Subject: Physics

keywords: momentum, gravity, energy, kinetic.

A cart has a momentum of 42 kg m/s to the right. Its mass is 6 kg. → What is its velocity?
show your work

Answers

Answer:

v = 7 m/s

Explanation:

p = m × v

42 = 6 × v

6v = 42

v = 42/6

v = 7 m/s

Whate type of wave is made up of a sine wave plus all of its odd harmonics?

Answers

If the phase and magnitude of each harmonic is just right, you can make a 'square wave' with those.

What is the capital of prince edward island

Answers

Answer:

The capital of Prince Edward Island is Charlottetown.

Explanation:

hope this helps, and if it did, please mark brainliest :)

Which of the following devices is associated with the reception of radio signals?

Answers

What are the "following" devices ? ?
I think they're a list of choices that you have but aren't sharing.

A few devices associated with the reception of various types of
radio signals include the resonant tank, the local oscillator, the
mixer, the detector, the coherer, the discriminator, the parabolic
reflector, the lecher wires, the audio transducer, the demultiplexer,
and ... my personal guess ... the 'antenna' or 'aerial'.

The function f(x)equalsnegative 0.25 (x minus 2 )squared plus 8 models the path of a volleyball when the player is 2 feet from the net. The height of the net is 7 ft comma 4 in. Will the ball go over the net? What if the player moves back so she is 4 feet from the net? Explain.

Answers

Answer:

The ball will go over the net when she's standing 2 feet away from the net, but not at 4 ft from the net

Explanation:

Suppose $f(x) = -0.25(x-2)^2 + 8$ then when the player is 2ft from the net, we can plug in x = 2:

$f(2) = -0.25(2-2)^2 + 8 = 0 + 8ft$

As 8 feet > 7 ft 4 in, the ball will go over the net

If the player moves back so that she's 4 feet from the net, plug in x = 4:

$f(4) = -0.25(4 - 2)^2 + 8 = -1 + 8 = 7 ft$

As 7 ft < 7 ft 4 in, this time the ball will NOT go over the net

Final answer:

The function models the path of a volleyball when the player is 2 feet from the net and will the ball go over the net at different distances.

Explanation:

The function f(x) = -0.25(x-2)^2 + 8 models the path of a volleyball when the player is 2 feet from the net. To determine if the ball will go over the net, we need to compare the height of the ball's path with the height of the net.

First, let's convert the height of the net to feet. The height, 7 ft 4 in, is equivalent to 7.33 feet. Now, substitute x = 2 into the function to find the height of the ball when the player is 2 feet from the net. f(2) = -0.25(2-2)^2 + 8 = 8 ft.

The ball will go over the net because the height of the ball, 8 feet, is greater than the height of the net, 7.33 feet.

If the player moves back so she is 4 feet from the net, substitute x = 4 into the function: f(4) = -0.25(4-2)^2 + 8 = 10 ft. The ball would still go over the net, as the height of the ball, 10 feet, is greater than the net's height.

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