A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25m/s2 and feels no appreciable air resistance. When it has reached a height of 525 m, its engines suddenly fail; the only force acting on it is now gravity. (a) What is the maximum height this rocket will reach above the launch pad? (b) How much time will elapse after engine failure before the rocket comes crashing down to the launch pad, and how fast will it be moving just before it crashes? (c) Sketch ay−t, vy−t, and y - t graphs of the rocket’s motion from the instant of blast-off to the instant just before it strikes the launch pad.
Answers: 3
Physics, 22.06.2019 00:00
Name three different units of energy used to measure heat and describe what type of situations each is usually used.
Answers: 2
Physics, 22.06.2019 05:20
Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1
Answers: 1
Physics, 22.06.2019 07:00
We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation
Answers: 3
Physics, 22.06.2019 16:00
What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass
Answers: 1
A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2....
History, 15.02.2021 22:00
History, 15.02.2021 22:00
Social Studies, 15.02.2021 22:00
Arts, 15.02.2021 22:00
Mathematics, 15.02.2021 22:00
Physics, 15.02.2021 22:10