a
model rocket is launched straight upward with an innitial speed of
11.0 m/s. it accelerates...
a
model rocket is launched straight upward with an innitial speed of
11.0 m/s. it accelerates with a constant upward acceleration of 22
m/s^2 until its engines stop 3.0 seconds later. it then continues
on as a free fall particle until it hits the ground.
(a) draw and label a diagram of the above and below
information
(b) find the velocity (in m/s ) of the rocket at the instant
it runs out if fuel.
(c)find the max height (in m) reached by the rocket
A model rocket is launched straight upward with an initial speed
of 42.0 m/s. It accelerates with a constant upward acceleration of
2.50 m/s2 until its engines stop at an altitude of 160
m.
(a) What can you say about the motion of the rocket after its
engines stop?.
(b) What is the maximum height reached by the rocket?
(c) How long after liftoff does the rocket reach its maximum
height?
(d) How long is the rocket in the air?
1. A model rocket is launched straight upward with an
initial space of 50.0 m/s. It accelerates with constant upward
acceleration of 2.00 m/s^2 until its engines stop at an altitude of
150m. (a) how long does it take for the engines to stop? (b) what
is the velocity of the rocket when its engine stop? (c) draw a
graph for acceleration versus time (be careful to label your axis
correctly). (d) what is the maximum height reached by the...
A fireworks rocket is launched vertically upward at 40
m/s.
At the peak of its trajectory, it explodes into two equal-mass
fragments. One reaches the ground t1 = 2.63s
after the explosion. When does the second fragment reach the
ground?
A 1246 kg weather rocket accelerates upward at 11.7
m/s2. It explodes 1.6 s after liftoff and breaks into
two fragments, one twice as massive as the other. Photos reveal
that the lighter fragment traveled straight up and reached a
maximum height of 571 m. What were the speed of the heavier
fragment just after the explosion?
An elevator accelerates upward at 1 m/s2. When the elevator is
moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5
m above the ?oor. Assume that the bolt does not experience air
resistance. Calculate how long it takes for the bolt to hit the
?oor, how far it travels, and how fast it is going when it hits the
?oor of the elevator. Solve this problem in two reference frames,
one ?xed with respect to...
A rocket moves with a speed of 45 m / s. The rocket suddenly
breaks into two parts of equal mass that fly at speeds v1 and v2.
Obtain the magnitude of the velocity of each part in which the
rocket broke.
[10 pts] A model rocket is launched from a raised platform at a
speed of 120 feet per second. Its height in feet is given by h(t) =
-16t^2 +120 t + 32 where t represents seconds after launch.
a. [3 pts] After how many second does the object reach its
maximum height? Use the vertex formula.
b. [2 pts] Use the previous result to find the maximum height
reached by the rocket.
c. [5 pts] After how many second...
A model rocket blasts off from the ground, rising straight
upward with a constant acceleration that has a magnitude of 91.3
m/s2 for 1.79 seconds, at which point its fuel abruptly runs out.
Air resistance has no effect on its flight. What maximum altitude
(above the ground) will the rocket reach?
A rocket is launched straight into the air with initial
velocity 200 ft/s. Assume the launch is instantaneous. How high
will it go, and how long will that take (use time increments of
0.01 seconds)? G= - 32.2 ft/s2 , H0=0 (the
ground)
V(t)=V0 + g t
H(t)= H0 + V0 t + ½ g t2
The rocket deploys a parachute after 9 seconds and descends at a
constant rate of 20 ft/sec. How long does it take to reach...
A rocket is fired straight upward, starting from rest with an
acceleration of
25.0 m/s2. It runs out of fuel at the end of 4.00 s and
continues to coast
upward, reaching a maximum height before falling back to Earth.
(a) Find the
rocket’s height when it runs out of fuel; (b) find the rocket’s
velocity when it
runs out of fuel; (c) find the maximum height the rocket
reaches; (d) find the
rocket’s velocity the instant before the rocket...