subject
Physics, 09.04.2020 02:03 mariaf0203

In a downhill ski race surprisingly little advantage is gained by getting a running start. This is because the initial kinetic energy is small compared with the gain in gravitational potential energy even on small hills. To demonstrate this, find the final speed and the time taken for a skier who skies 65.0 m along a 30° slope neglecting friction for the following two cases. (Note that this time difference can be very significant in competitive events so it is still worthwhile to get a running start.)(a) starting from restfinal speedm/stime takens (b) starting with an initial speed of 3.00 m/s final speedm/stime taken s

ansver
Answers: 1

Another question on Physics

question
Physics, 21.06.2019 18:00
Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s
Answers: 2
question
Physics, 22.06.2019 03:00
Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f
Answers: 2
question
Physics, 22.06.2019 08:00
What is the rate of change in a objects position?
Answers: 1
question
Physics, 22.06.2019 13:20
This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?
Answers: 3
You know the right answer?
In a downhill ski race surprisingly little advantage is gained by getting a running start. This is b...
Questions
question
Social Studies, 12.02.2020 17:49
question
History, 12.02.2020 17:50
Questions on the website: 13722365