Skip to main content

First Year Physics Help…?

) Sam, whose mass is 75 kg, takes off accross level snow in his jet powered skis. The skis have a thrust of 197 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of fuel after only 8 s.(a) What is Sam’s top speed?(b) How far has Sam traveled when he finally coasts to a stop?Any help would be awesome! thank you!

1 Answers

(a). a = (F – f_friction)/ma = (F – µ m g)/ma = (197 – 0.1 * 75 * 9.8)/75a = 1.647 m/s²v = a t = 1.647 * 8v = 13.173 m/s(b). conserve of energyfirst stage condition;F s = ½ mV² + µ m g s197 s = ½ (75)(13.173)² + 0.1 (75)(9.8) ssolve for s, we gets = 52.693 msecond stage condition;½ mV² + (- µ m g S) = 0½ (75)(13.173)² + (- 0.1 * 75 * 9.8 S) = 0solve for S,S = 88.535 mtotal distance = s + S = 52.693 + 88.535 = 141.23 m... Show More

Want to answer this question?

Join our community to share your knowledge!

Categories

Tags

Related Questions

10
Fish from Petco died, do i have to bring it in?

I bought a fish from petco on Sunday, it died this morning, do i need to bring in the dead fish to get my money back, or...

9
Flagstad Inc. presented the following data : Net income $2,790,000 Preferred stock: 57,300 shares outstanding, $100 par, 9% cumulative,

Flagstad Inc. presented the following data : Net income $2,790,000 Preferred stock: 57,300 shares outstanding, $100 par,...

3
Flatworms are acoelomates. which of the following statement supports this fact?

Flatworms are acoelomates. which of the following statement supports this fact? . . a. a flatworm doesn't have a coelom....

4
“Flesh Of The Stars” website (from the movie “Knocked Up”) ?

Is there really a site like fleshofthestars.com??? lol! JUST CURIOUSE

1
flick up to load email?

I recently got a new s5 phone and downloaded my yahoo email app. The update has a new feature which prevents me from see...

8
Floor burn from volleyball?

i got floor burn during a game to save a ball…then i did it again at pratice and it got worse. I put neosporin on it. Ho...

3
Fluid Mechanics problem?

a lead sphere and a aluminum sphere have the same mass and are uniform. What is the ratio of the radius between the alum...

3
Fluorine is a toxic, reactive gas. How would you explain why it so reactive?

*Ok below is the full question.Fluorine is a toxic, reactive gas. Which representation (structural formula, electron dot...

2
Flux through a cube at point (0,0,0)?

A cube has one corner at the origin and the opposite corner at the point (L,L,L). The sides of the cube are parallel to...