Physics, 11.12.2020 01:00 blaze9691

4. An 800 kg wrecking ball needs to achieve a velocity of 50 m/s at the bottom of the swing in order to break through a brick wall. How high
does it need to be pulled in order to achieve this velocity?

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 05:30

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

Answers: 1

Answer

Physics, 22.06.2019 20:30

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Answers: 2

Answer

Physics, 22.06.2019 21:00

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?

Answers: 1

Answer

Physics, 22.06.2019 22:30

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.

Answers: 1

Answer

You know the right answer?

4. An 800 kg wrecking ball needs to achieve a velocity of 50 m/s at the bottom of the swing in orde...

Questions