Respuesta :

The mass of the object is 9 kilograms.

What is mass?

It should be noted that a mass simply means the quantity of matter that's in a physical body.

From the information given, the following can be deduced:

Acceleration = 3m/s²

Force = 27N

Mass = Force / Acceleration

Mass = 27/3

Mass = 9kg

The mass is 9 kilograms.

The distance of the car in the second question is 500 miles and the speed is 25mph. The time taken will be:

Time = Distance / Speed

Time = 500/25

Time = 20 hours

Wavelength is calculated as:

= Velocity / Frequency

= 50/25

= 2m

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pstnonsonjoku

Speed refers to the rate of change of velocity with time.

What is speed?

The term speed refers to the rate of change of velocity with time. Now we have to solve the following problems;

1) Given that;

F = ma

F = force

m = mass

a = acceleration

m = F/a

m = 27 N/3 m/s^2

m = 9 Kg

2) Given that speed = distance /time

time = distance/speed = 500 miles/25 mph

= 20 hours

3) Now we know that;

v = λf

v = velocity

λ = wavelength

f = frequency

λ = v/f = 50 m/s/25 Hz

= 2 m

4) Speed of the wave = 2 m * 25 Hz = 50 m/s

Speed of the car = 500 m/10 s = 50 m/s

The car and the wave are moving at the same speed.

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