Question

the models show the motion of two trains leaving a station. which train goes faster?

step 1
make a prediction.
the green train travels at a faster speed than the blue train.

step 2
find the speed of the first object.
the green train travels at a speed of meters per second.

Explanation:

Identify the distance traveled by the Green train at 1.0 s

$$ d = 4.5\text{ m} $$

Calculate the speed of the Green train

$$ v = \frac{d}{t} = \frac{4.5\text{ m}}{1.0\text{ s}} = 4.5\text{ m/s} $$

Answer:

Find the speed of the first object.

The Green train travels at a speed of <blank>4.5</blank> meters per second.