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Kipish [7]
3 years ago
12

Please can you help?? A skydiver is falling at terminal velocity when she opens her parachute. After a while she reaches a new t

erminal velocity. How does her new terminal velocity compare to her original terminal velocity?​
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
7 0
It will decrease because she is loosing momentum and she will begin to slow down.
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Using the equation for Impact, can you explain the following:
Anni [7]

Explanation:

Equation for Impact

FΔt = ΔP,

F = force

Δt  = Impact of time

ΔP = Change in momentum

Car steering is engineered to fail in order to maximize the time of contact and hence reduce the initial impact and mitigate the damage incurred.

Road guard railing crumple on contact to maximize impact time and hence reduce impact intensity and mitigate damage.

Road safety containers are loaded with liquid or sand as they improve the period of impact.

3 0
3 years ago
A rocket exhausts fuel with a velocity of 1500m/s, relative to the rocket. It starts from rest in outer space with fuel comprisi
babunello [35]

Answer:

v= 2413.5 m/s

Explanation:

maximum change of speed of rocket

=(initial exhaust velocity)×ln [(initialmass/finalmass)]

let initial mass= m

final mass = m-m(4/5) = m/5

[since the 80% of mass which is fuel is exhausted]

V-0 = 1500 ln (1/0.2)

V= 1500×1.609 = 2413.5 m/s

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4 0
3 years ago
Read 2 more answers
What is the speed of a train that goes 1,000 km in 5 hours?​
jonny [76]

Answer:

200 km/h

Explanation:

Because the train is travelling 1000 km in 5 hours, you simply divide 1000 by 5, giving you 200 km/h. This is about 124.27 mph.

4 0
3 years ago
An aluminum rod is designed to break when it is under a tension of 600 N. One end of the rod is connected to a motor and a 12-kg
9966 [12]

Answer:

17 m/s

Explanation:

Given:

Tension = 600 N

Mass of object, M= 12 kg

Radius, r = 5.78 m

Required:

Find the speed the rod will break

Here, the motor is continuously increased. To find the speed the rod will break (speed of centripetal force), we have:

Tension = Centripetal force

Where centripetal force = \frac{mv^2}{r}

Therefore,

T = \frac{mv^2}{r}

Make v subject of the formula:

v = \sqrt{\frac{T*r}{m}}

= \sqrt{\frac{600*5.78}{12}}

= \sqrt{\frac{3468}{12}

= \sqrt{289}

= 17 m/s

Speed the rod will break is 17 m/s.

4 0
4 years ago
A certain copper wire has a resistance of 10.5 ω. at what fraction of the length l must the wire be cut so that the resistance o
Delvig [45]
The answer for that questions will be 759. Stars itir
6 0
3 years ago
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