Physics

Starting from rest, a 1.7x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.45 N on it. This force does 1.9x10-4 J of work on the flea. (a) What is the flea's speed when it leaves the ground? (b) How far upward does the flea move while it is pushing off? Ignore both air resistance and the flea's weight.

I got (b) = 4.24x10-4 m but I can't figure out (a)

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. a. work= initial KE
    work=1/2 m v^2 solve for v

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. But How to you solve for the velocity?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. math , steve or damon pls

    for questions 15 and 16, multiply. write in scientific notation (9x10^4)(8x10^6) 7.2x10^25 1.7x10^11 7.2x10^11 1.7x10^25 (1.7x10^-4)(5x10^-5) 8.5x10^-9 8.5x10^20 6.7x10^-9 6.7x10^20 for 15 I'm thinking it is c and 16 could be A

  2. Physics

    Five Boys are pushing a snowball, and each is pushing with a force of 10.0N. However, each boy is pushing in a different direction. They are pushing north, northeast, east, southeast, and south. (Each boy is pushing at an angle of

  3. Physics

    Suppose you walk 18.0m straight west and then 25.0 m straight north. How far are you from your starting point and what is the compass direction of a line connecting your starting point to your final position>

  4. physics

    Starting from rest, a 2.1x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.37 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is

  1. Physics

    Newton's first law of motion states that an object in motion will continue to move at constant speed in a straight line. Only an outside force can change the speed or direction. If the object is at rest, it will remain at rest,

  2. physics

    For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.30 mm -long, 0.540 mg critter can reach a height of 18.0 cm in a single leap. a) Neglecting air drag, what is the takeoff speed of such

  3. Science

    Relationships Among Organisms Quick Check answers: 1. symbiotic 2. dogs and fleas 3. One organism eats another organism that makes its own food. 4. It increases because fewer mice are eaten by owls. 5. The flea population

  4. Physics

    A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free

  1. Physics

    Starting from rest, a 2.3x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.44 N on it. This force does 2.7x10-4 J of work on the flea. (a) What is

  2. Math

    A manufacturer of flea collars for animals that weigh less than 5 kilograms injects the collars with 15 milligrams of a biocide that only acts on fleas. The manufacturer will release a collar that has no less than 14 milligrams

  3. Physics

    When jumping, a flea reaches a takeoff speed of 1.5over a distance of 0.45. A.) What is the flea's acceleration during the jump phase. B.) How long does the acceleration phase last?

  4. biology

    which of the following pair of organisms represents a predator-prey relationship? a- flea and dog b- robin and tree c- polar bear and seal d- bacteria in human large intestine and human

View more similar questions or ask a new question.