A rocket engine in deep space is programmed to provide a thrust force given by the following function of time:
?(?)=30?F(t)=30t
The rocket has a mass of 80 kg.
A) How far will it have traveled after 9.1 seconds, assuming it starts from rest?
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A rocket engine in deep space is programmed to provide a thrust force given by the...
A rocket that is in deep space and initially at rest relative to an inertial reference frame has a mass of 2.80 105 kg, of which 1.92 105 kg is fuel. The rocket engine is then fired for 250 s while fuel is consumed at the rate of 480 kg/s. The speed of the exhaust product relative to the rocket is 3.21 km/s. (a) What is the rocket's thrust? N (b) What is the mass of the rocket after the...
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 85.2 x 105 kg, of which 18.3 x 105 kg is fuel. The rocket engine is then fired for 170 s, during which fuel is consumed at the rate of 360 kg/s. The speed of the exhaust products relative to the rocket is 2.60 km/s. (a) What is the rocket's thrust? After the 170 s firing, what are (b)...
Given the shown thrust curve for a model D12 engine,
estimate the total impulse by finding the area under the curve.
x.xx N*s format
If the model rocket has a constant mass of 350 grams, estimate
the velocity of the rocket to the nearest m/s after the engine
stops. Assuming no drag but include the constant weight of the
rocket.
204! D12 Engine 204는 154卡 10 5 0.0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 Time in Seconds
Far in space, where gravity is negligible, a 440 kg rocket
traveling at 75 m/s fires itsengines. Figure P9.26 shows the thrust
force as a function of time,with the horizontal axis in 11
sincrements. The mass lost by the rocket during these 33 s is
negligible.
Figure P9.26
(a) What impulse does the engine impart to
therocket?
N·s
(b) At what time does the rocket reach its maximum speed?
s
What is the maximum speed?
m/s
At time t=0 a 2150 kg rocket in outer space fires an engine that exerts an increasing force on it in the +x−direction. This force obeys the equation Fx=At2, where t is time, and has a magnitude of 889.66 N when t=1.25 s. What impulse does the engine exert on the rocket during the 2.9 s interval starting 2.00 s after the engine is fired?
1.) You are in a spaceship at rest in deep space, outside the influence of any gravity. Without fuel, your vessel has a mass of 5,750 kg and its rocket engine expels exhaust at a speed of 8,250 m/s. You want to travel to an outpost that is quite far away, and you decide to accelerate to a speed of 12,500 m/s, coast for some time, and then slow down to a stop. A) What is the minimum mass of...
A jet aircraft with a mass of 4,475 kg has an engine that exerts a force (thrust) equal to 60,200 N. (a) What is the jet's acceleration? (Give the magnitude.) (b)What is the jet's speed after it accelerates for 7 s? (Assume it starts from rest.) (c) How far does the jet travel during the 7 s?
A jet aircraft with a mass of 4,675 kg has an engine that exerts a force (thrust) equal to 59,500 N. (a) What is the jet's acceleration when it takes off? (Give the magnitude.) m/s2 (b)What is the jet's speed after it accelerates for 9 s? (Assume it starts from rest.) m/s (c) How far does the jet travel during the 9 s? m
A robotic spacecraft is flying in interstellar space on a straight line with a constant speed of 77.6 km/s. (See figure.) This speed is measured with respect to the space station the spacecraft was originally launched from. In interstellar space the gravitational pull from the stars is negligible, because the stars are extremely far. The spacecraft turns its main rocket engine on for a time period of 6.9 hours. The rocket engine provides a thrust of 936 N of force....
Sketch the circle on your written homework and on your sketch
show how the rocket must be oriented at each of the 4 labeled
points. The thrust vector (i.e. net force vector on the rocket) of
the rocket always points directy from the flames to the pointy-end.
At each point:
Clearly show which way the front end of the rocket points and
also clearly show which end of the rocket has the rocket
engine.
Indicate whether the engine is firing,...