Respuesta :

natalievang9
Car: (convert first the units)
240 km * (1000 m /1 km) = 240000 m
2 hr * (3600 s / 1 hr) = 7200 s
v = d/t
v = 240000/7200
v = 33.33 m/s

Sprinter:
v = d/t
v = 100/9.5
v = 10.53 m/s

thus the car travels faster than sprinter by 33.33 - 10.53 = 22.8 m/s

Answer:

the car goes faster by a difference of 22.8 m\s

Explanation:

First we calculate the speed of each with the following formula

[tex]V= \frac{d}{t} \\V= \frac{100m}{9.5s} \\V= 10.5 \frac{m}{s}[/tex]

[tex]V= \frac{240 Km}{2 h}\\ V= 120 Km/h[/tex]

To be able to compare which is faster we must use the same units

we transform from km per hour to m per second

[tex]120\frac{Km}{h}.\frac{1000m}{1Km}= 120000 \frac{m}{h}\\120000 \frac{m}{h}.\frac{1h}{3600s}= 33.3 \frac{m}{s}[/tex]

To know how much faster the car goes we subtract the speed of the car with that of the sprinter

[tex](33.3-10.5)\frac{m}{s}= 22.8 \frac{m}{s}[/tex]

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