Physics

A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by a_y =( 2.70m/s^3)t, where the +y-direction is upward.

1) What is the height of the rocket above the surface of the earth at t = 10 s?

2) What is the speed of the rocket when it is 345 m above the surface of the earth?

  1. 👍 0
  2. 👎 1
  3. 👁 377
  1. what is the speed of the rocket when it is 345 m above the surface of the earth?

    1. 👍 0
    2. 👎 0
  2. 140 m

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A test rocket is fired straight up from rest. The net acceleration is 20 m/s2 upward and continues for 4.0 seconds, at which time the rocket engines cease firing. What maximum elevation does the rocket reach?

    asked by alex on June 15, 2015
  2. physics

    A rocket is launched vertically from Earth's surface with a velocity of 3.4 km/s. How high does it go: From Earth's centre? From Earth's surface? how can this be done without any time or force mentioned ??

    asked by matin on May 9, 2012
  3. Math

    A model rocket blasts off and moves upward with an acceleration of 12 m/s^2 until it reaches a height of 28 m , at which point its engine shuts off and it continues its flight in free fall. What is the speed of the rocket just

    asked by Cassandra on September 8, 2009
  4. Chemistry

    A model rocket is launched straight upward with an initial speed of 45.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 160 m. A. what is the max height reached by the

    asked by Lucy on September 10, 2017
  5. physics

    A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4 . The acceleration period lasts for time 9.00 until the fuel is exhausted. After that, the rocket is in free fall.

    asked by ahhhh! on May 25, 2011
  1. Physics

    During launches, rockets often discard unneeded parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.45 m/s2 . When it is 250 m above the launch pad, it discards a used fuel canister by

    asked by Emiko on January 29, 2019
  2. physic

    A sounding rocket, launched vertically upward with an initial speed of 79.0 m/s, accelerates away from the launch pad at 5.70 m/s2. The rocket exhausts its fuel, and its engine shuts down at an altitude of 1.15 km, after which it

    asked by joy on January 23, 2018
  3. Physics

    A test rocket is launched vertically from ground level (y=0m), at time t=0.0 s. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 97 m and

    asked by Renay on March 26, 2013
  4. Physics

    A simple pendulum suspended in a rocket ship has a period To. Assume that the rocket ship is near the earth in a uniform gravitational field. Determine for each of the following statements whether it is correct or incorrect. If

    asked by Joan on May 4, 2011
  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

    A 5.00 x 102 kg hot air balloon takes off from rest at the surface of the earth. The buoyant force lifts the balloon straight up, performing 9.70 x 104 J of work on the balloon. At the instant the balloon's upward speed is 4.08

    asked by Help on November 18, 2014

You can view more similar questions or ask a new question.