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Harlamova29_29 [7]
3 years ago
9

A school bus moves at speed of 35 mi/hr for 20 miles. How long will it take the bus to get to school?

Physics
2 answers:
Irina18 [472]3 years ago
7 0

The time required for the bus to get to school (in hours) is

<em>(the distance from here to school) divided by (35 mi/hr) </em> .

In order to find the actual number, we would need to know the distance from here to school.

mafiozo [28]3 years ago
4 0

Answer:

Time, t = 0.57 hours

Explanation:

It is given that,

Speed of the school bus, v = 35 mi/hr

Distance covered by the bus, d = 20 miles

We need to find the time taken by the bus to get to school. Time taken by the bus is given by :

t=\dfrac{d}{v}

t=\dfrac{20\ mi}{35\ mi/hr}

t = 0.57 hours

So, the time taken by the bus to reach school is 0.57 hours. Hence, this is the required solution.

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To solve this problem, we have to use the formula:

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f = E / h

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3 years ago
Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50 meters above the surface
mina [271]
We have:

Total Energy: KE + GPE
KE (Kinetic Energy) = \frac{1}{2} m*v^2
GPE (Gravitational Potential Energy) = m*g*h

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Formula:

Total Energy: KE + GPE
TE =  \frac{1}{2} m*v^2 + m*g*h

Solving:
TE = \frac{1}{2} m*v^2 + m*g*h
TE = \frac{1}{2} *2.0*10^2 + 2.0*10*50
TE =  \frac{2.0*100}{2} + 1000
TE =  \frac{200}{2} + 1000
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\boxed{\boxed{TE = 1100\:Joule}}\end{array}}\qquad\quad\checkmark


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