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Lady bird [3.3K]
3 years ago
10

How can we predict how high a roller coaster can go knowing its velocity?

Physics
1 answer:
KatRina [158]3 years ago
6 0
“to predict the speed that a coaster will reach before it is ever placed on the track. ... When coaster goes up by height h then its gravitational potential energy increases by the amount m.g.h where m = mass of coaster, h = height of coaster and g = gravitational acceleration due to Earth”
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There are 1000 blank in a meter
Andru [333]

Answer:

1000 millimeters

Explanation:

5 0
3 years ago
A piece of string 2 meters and has a mass of 5g. On one end of the string hangs a 200 g mass. Find the tension of the string and
viktelen [127]

Explanation:

It is given that,

Length of the string, l = 2 m

Mass of the string, m=5\ g=5\times 10^{-3}\ kg

Hanged mass in the string, m'=200\ g=0.2\ kg

1. The tension in the string is given by :

T=m'g

T=0.2\times 9.8

T = 1.96 N

2. Velocity of the transverse wave in the string is given by :

v=\sqrt{\dfrac{T}{M}}

m = M/l

v=\sqrt{\dfrac{Tl}{m}}

v=\sqrt{\dfrac{1.96\times 2}{5\times 10^{-3}}}

v = 28 m/s

Hence, this is the required solution.

4 0
3 years ago
Can one individual represent and entire population? Why or why not
zubka84 [21]

Answer:

Explanation:

A representative does his/her utmost to convey the feelings of the majority of the group they speak for, and stands up for their interests. This might be for negotiation, voting, litigation, diplomacy, etc.  

A leader, ideally, inspires their constituents and brings out the best in them, as in strength, ethics, spirituality, and so on.  

Short version: a rep is an agent or conduit. A leader is a catalyst. Either job can be hard. And yes, it can be done for most of a population. Maybe not all, but not everyone can fit into the same mold.

8 0
3 years ago
A 60 kg student in a rowboat on a still lake decides to dive off the back of the boat. The studen'ts horizontal aceleration is 2
TiliK225 [7]
As per the third law of Newton, the force exerted by the boat over the student is equal in magnitude to the force that the student exerted on the boat.

So, calculate the force on the student using the second law of Newton, Force = mass * acceleration.

Force on the student = 60 kg * 2.0 m/s^2 = 120 N.

=> horizontal force exerted by the student on the boat = 120 N

Answer: option d. 120 N. toward the back of the boat.

Of course it is toward the back because that is where the student jumped from..
4 0
4 years ago
Define 1 second time​
malfutka [58]

Answer:

define 1 second time

One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. ... One second is equal to 1/86,400 of a mean solar day.

7 0
3 years ago
Read 2 more answers
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