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fomenos
4 years ago
13

A gray kangaroo can bound across a fl at stretch of ground 810 with each j ump can-ying it 10 m from the takeoff point. if the k

angaroo leaves the ground at a 20° angle, what are its (a) takeoff speed and (b) horizontal speed?
Physics
1 answer:
ivanzaharov [21]4 years ago
6 0
The formula for maximum distance is 
X = (V^2 / g) * sin (2 * theta) 
10 = (V^2 / 9.8) * sin (2 * 20) 
10 = (V^2 / 9.0) * sin(40) 
10 = (V^2 / 9.8) * 0.324 
v^2 = (10 / 0.324) * 9.8 
V^2 = 302.47
v = 17.39 meters/sec (takeoff speed) 

The horizontal speed is  = Takeoff Speed * Cos(20) = 17.39 * 0.910 = 16.341 meters / sec 
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sp2606 [1]

We have that the time in seconds, minutes, and hours is

t=1.083*10^{-4}s

T_{min}=1.805*10^{-6}min

T_{hours}=3.0083*10^{-8}hours

From the Question we are told that

Velocity v=13.0m/s

Distance d=120 km

Generally the equation for the Time  is mathematically given as

t=\frac{13}{120*10^3}\\\\t=1.083*10^{-4}s

Therefore

T_{min}=1.083*10^{-4}s/60

T_{min}=1.805*10^{-6}min

And

T_{hours}=T_{min}/60

T_{hours}=3.0083*10^{-8}hours

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3 years ago
What is the distance a bike travels at 38 km/he for 4.5 seconds?
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2.36m/s

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4 0
3 years ago
All matter has electrical and magnetic properties because the atoms that make up matter are held together by electromagnetic for
leva [86]

Answer:

Charge

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Charge is a fundamental property of all matter. All matter has electrical and magnetic properties because the atoms that make up matter are held together by electromagnetic forces.

These charges are usually positive and negative charges. When these charges which make up an atom (positive and negative) are equal, the atom is said to be electrically neutral. When positive charge is greater than negative charge, the atom is said to positively charged. Also, if the number of negative charges are more in an atom, the atom is said to be negatively charged.

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3 years ago
What is temperature?
hammer [34]

The term temperature has to do with the  measure of an object's "hotness".

<h3>What is temperature?</h3>

The term temperature has to do with how hot or cold a body is. In other words, the word temperature brings us to call to mind the degree of hotness or coldness of a body.

Succinctly put, the term temperature has to do with the  measure of an object's "hotness".

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2 years ago
Five hundred million years ago, basaltic lava flowed in an area now known as Monticello, the historic home of Thomas Jefferson.
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Explanation:

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There are three main types of rock involved in the rock cycle;

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The history of the rock in Monticello begins with igneous rock formation. Basalt is an igneous rock that forms from the cooling and solidification of molten magma. Under intense pressure and temperature regimes, they are changed to metamorphic rocks.

Agents of denudation such as wind, water and glacier weathers the rock and disintegrates it. They are then carried into basins where they are deposited. Here they form sedimentary rock.

The process still goes on as the sedimentary rock gets taken into depth, they can either melt to form igneous rock or be changed to metamorphic rocks.

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5 0
3 years ago
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