physics

An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +40 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. If the total distance traveled by the sled is 17 500 ft and the total time is 90 s, find the times t1 and t2

  1. 👍 0
  2. 👎 0
  3. 👁 114
  1. t1 + t2 = 90
    (1/2)a*t1^2 + a*t1*t2 = 17,500

    You know that a = 40. That leaves you with two equations in two unknowns to solve.

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +15.0 m/s2. At tl = 2.8 s the rocket engine is shut down and the sled moves with constant velocity v. At the 7800 m mark, the sled

    asked by Ab on September 13, 2015
  2. Physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at 15.0 m/s 2 . At t1 the rocket engine is shut down and the sled moves with constant velocity v for another t2 s. The total distance

    asked by Josh on October 6, 2011
  3. Physics

    an ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13m/s^2. At t1, the rocket engine is shut down and the sled moves with constant velocity v until t2. The total distance traveled by

    asked by Anonymous on September 27, 2017
  4. Physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13.0 m/s^2. At t1 the rocket shut down and the sled moves with constant velocity v until t2. The total distance traveled by the

    asked by Kahlei on August 31, 2010
  5. physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13.0 m/s^2. At t(subscript 1), the rocket engine is shut down and the sled moves with a constant velocity v until t(subscript 2).

    asked by Sela on October 5, 2009
  6. physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +35 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. Assume the

    asked by Kayla on January 21, 2010
  7. Physics

    An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +42 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. Assume the

    asked by Candace on January 22, 2010
  8. Physics

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely?

    asked by Tracy on March 4, 2012
  9. ap physics

    On a frozen pond, a 7 kg sled is given a kick that imparts to it an initial speed of 3.1 m/s. The coefficient of kinetic friction between sled and ice is 0.15. The acceleration of gravity is 9.8 m/s2 . Find the distance the sled

    asked by anna on February 25, 2011
  10. physics

    On a frozen pond, a 10 kg sled is given a kick that imparts to it an initial speed of 6.2 m/s. The coefficient of kinetic friction between sled and ice is 0.14. Find the distance the sled moves before coming to rest. The

    asked by luma on November 28, 2015

More Similar Questions