The distance the
object goes in a given period of time is its speed.
If the speed of an object is in a specific direction,
it is called velocity. The change in velocity over a period of time is the acceleration of
the object.

The
distance traveled divided by the time taken to travel the
distance"

Speed
= Distance divided by Time:

For
example,

If
a marble traveled 60 cm. in 0.85 seconds, you would divide
60cm. by 0.85 = 70.588. Then you can round to the nearest
tenth

70.6
cm/sec.

Try
these practice problems for calculating speed:

1.
A car traveled 200 miles in 3 hours. How fast was it going?

2.
A marble traveled 90 centimeters in 1.23 seconds.

How fast
was it going?

3.
It took an eyeball 0.45 seconds to travel 60 centimeter.

How fast
was it going?

Click
on the Screen to watch a movie on Speed.

VELOCITY

Speed
+ Direction

If
a marble traveled 60 cm. NORTH in 0.85 seconds, you would divide
60cm by 0.85 seconds = 70.588 cm/sec. and finally add the direction
(NORTH) and round to the nearest tenth. Your final answer for
velocity would be .

70.6
cm/sec. North

1.
A car traveled 200 miles North in 3 hours. What was its velocity?

2.
A marble traveled 90 centimeters South in 1.23 seconds.

What was its velocity?

3.
It took an eyeball 0.45 seconds to travel 60 centimeters EAST.