3 years ago

A train travels 120 km In 2 hours and 30 minutes what’s its average speed

Physics

2 answers:

dangina [55]3 years ago

8 0

Formula for distance is d=st
so for speed is s=d/t
48 km per hour

Sedaia [141]3 years ago

5 0

Speed= distance / time or s=d/t.

120 / 2.5 (2.5 is 2 hours and 30 minutes.) = 48 km/h

You might be interested in

Which body system do you think benefits the most from positive eating habits? Explain your answer.

Airida [17]

Answer:

Que?

Explanation:

7 0

3 years ago

n electromagnetic wave in vacuum has an electric field amplitude of 611 V/m. Calculate the amplitude of the corresponding magnet

enot [183]

Answer:

The corresponding magnetic field is

Explanation:

From the question we are told that

The electric field amplitude is $E_o = 611\ V/m$

Generally the magnetic field amplitude is mathematically represented as

$B_o = \frac{E_o }{c }$

Where c is the speed of light with a constant value

$c = 3.0 *0^{8} \ m/s$

$B_o = \frac{611 }{3.0*10^{8}}$

$B_o = 2.0 4 *10^{-6} \ Vm^{-2} s$

Since 1 T is equivalent to $V m^{-2} \cdot s$

$B_o = 2.0 4 *10^{-6} \ T$

6 0

3 years ago

How is refraction different from reflection?

olga_2 [115]

The angle of refraction is not necessarily equal to the angle
of incidence, whereas the angle of reflection always is.

5 0

3 years ago

Explain why machine can"t be 100% efficient practically?

Zigmanuir [339]

Answer:

Heat

Explanation:

Heat is the main component in why everything is not 100% efficient. Heat is a byproduct of everything and cannot be avoided.

5 0

3 years ago

Read 2 more answers

A dragster travels 1/4 mi in 6.7 s. Assuming that acceleration is constant and the dragster is initially at rest, what is its ve

nlexa [21]

V0=0m/s (initially at rest)
t=6,7s
s=1/4mi=402,336m
s=(a*t^2)/2 -> a=2*s/t^2 -> a=2*402,336m/(6,7s)^2
a=804,672/44,89=17,93 m/s^2
v=v0+at
v=0+17,93 m/s^2 * 6,7s = 120,131 m/s = 432,4716 km/h

3 0

3 years ago

Read 2 more answers