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Asked by Holly
A ball is thrown vertically into the air with an initial velocity of 19 m/s. What height will it travel upwards before it starts to reverse its direction?
Given parameters are: Initial velocity of the ball (u) =19m/s. The velocity of the ball at maximum height (v) = 0. g = 9.8m/s^2 Let us consider the maximum height as H. Consider the formula, 2gH = v^2– u^2 2 × (- 9.8) × H = 0 – (19)^2 – 19.6 H = – 361 H = 18.418 m. Therefore, The ball will travel a maximum height of 18.418m upwards before it starts to reverse its directi... more
Asked by Subhash
What is the difference between physics and Technology
Physics is the study of natures laws of energy, waves forces and how the universe 'works'. Technology is about using these principles to build machines or systems that do useful jobs.
Asked by Neo
It is likely that you can hit someone in the stomach, for example at a speed of 15 m / s ? (the person performing the blow is normally strong)
If you Google average speeds of vehicle you will notice that the typical speed for a car is 13 - 30 m/s. So, unless you can punch someone as fast as a car, I doubt it
Asked by Byron
The bumper cars crash into each other and stop, explain why both bumper cars stop after the crash
Usually, the cars would move because the kinetic energy they had before the crash would have been conserved. In this case, the kinetic energy is not conserved so, they stop moving. The kinetic energy may have been converted into thermal energy.
Asked by Himadritanaya
Why physics and technology depended on each other
Asked by Angel
The student needs to develop the experiment to determine the loss in potential energy and the gain in kinetic energy as the toy car is rolling down the slope state two measurements the student must take
Hi Angel, For this question, you would want to measure the mass of the toy car in grams and the height of the slope in meters This is because PE = mgh potential energy= mass x gravitational field strength x height Hope this is helpful.
Asked by Pema
What is the relationship between physic, technology and nature
Physics is a description of the fundamental laws which govern how matter, forces and waves interact. Our understanding of Physics is incomplete and improving over time, but the laws themselves are fixed. Nature consists of all the naturally occurring (i.e. not man-made) objects in the universe, e.g. planets, stars, rocks, trees, animals etc. Technology is invented by humans and used to build artif... more
Asked by Holly
A ball is thrown vertically into the air with an initial velocity of 19 m/s. What height will it travel upwards before it starts to reverse its direction?
Given parameters are: Initial velocity of the ball (u) =19m/s. The velocity of the ball at maximum height (v) = 0. g = 9.8m/s^2 Let us consider the maximum height as H. Consider the formula, 2gH = v^2– u^2 2 × (- 9.8) × H = 0 – (19)^2 – 19.6 H = – 361 H = 18.418 m. Therefore, The ball will travel a maximum height of 18.418m upwards before it starts to reverse its direction. Feel free t... more