subject
Physics, 05.10.2019 06:30 hectorgonzalejr333

Arocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 85 m/s^2 for t1 = 46 s. the first stage then detaches and the second stage fires, providing a constant acceleration of a2 = 31 m/s^2 for the time interval t2= 41 s. part (a) enter an expression for the rocket's speed, v1, at time t1 in terms of the variables provided.
part (b) enter an expression for the rocket's speed, v2, at the end of the second period of acceleration, in terms of the variables provided in the problem statement.
part (c) using your expressions for speeds v1 and v2, calculate the total distance traveled, in meters, by the rocket from launch until the end of the second period of acceleration.

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 16:40
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
question
Physics, 22.06.2019 16:50
Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.
Answers: 2
question
Physics, 22.06.2019 19:30
Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical
Answers: 1
question
Physics, 23.06.2019 02:00
Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)
Answers: 2
You know the right answer?
Arocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 8...
Questions
question
English, 23.04.2020 22:59
question
English, 23.04.2020 22:59
question
History, 23.04.2020 22:59
Questions on the website: 13722363