Skip to main content
L

Lavinia Carroll

Feb 20, 2025

What is her speed at the bottom of the slope?

A cyclist is coasting at 11m/s when she starts down a 410m long slope that is 30 m high. The cyclist and her bicycle have a combined mass of 70 kg. A steady 15N drag force due to air resistance acts on her as she coasts all the way to the bottom.
0
Save

2 Answers

K
Kian Lynch

Feb 20, 2025

Θ = arcsin(30/410) = 4.2ºweight downslope = mgsinΘ = 70kg 9.8m/s² sin4.2 = 50.2 Nfriction upslope = 15 Nnet downslope force = 35.2 N, sonet downslope acceleration = 35.2N / 70kg = 0.50 m/s²Now use Torricelli's equation:v² = u² + 2as = (11m/s)² + 2 0.50m/s² 410m = 533 m²/s²v = 23 m/sHope this helps!... Show More
0
K
Kian Lynch

Feb 20, 2025

A steady 15N drag force due to air resistance acts on her --that isn;t how it works... Show More
0

Want to answer this question?

Join our community to share your knowledge!

Log in Sign up

Categories

Tags

Related Questions

6
8
what is homeostasis???

I need to explain what homeostasis is in 400 words, what is it??

10
10
What is intended in ‘revolutionary tea’ by singing

What is intended in "revolutionary tea" by singing

10
4
What is involved in a mechanical aptitude test?

I have an interview in two weeks (round two) for an Apprentice Powerline Maintainer. I have made it through the first ro...

6
What is Iron Mans weakness?

In the comic book, not the movie.BQ: Who is his arch nemesis?

10
What is it called when the center sends the ball to the quarterback? (football)?

I know absolutely nothing about football (american football, that is, not soccer,) and I SWEAR TO GOD this question is i...

5
What is it called when your cat arches its back and steps sideways?

it is kinda creeping me out and i want to know what it is called.

10