Share Sci-Ch. 3: Lesson 2 What is Speed? Forces & Motion (SCS 4th)
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Objects move at different _________.
Speeds
__________ is the ___________ at which an object changes ____________.
Speed, rate, position
To find an object’s average speed, divide the ___________ the object moves by the total ____________ spent moving.
Distance, time
The speed of most objects is NOT constant. In other words, objects do not move at the same speed all of the time. Think about riding a bike. In these types of math problems you can calculate the _______ _______.
Average speed
The formula for average speed is:
Speed = distance/time
*Speed equals distance divided by time
You and your family are traveling to Six Flags for the summer. It is a distance of 60 miles from your house to six flags. The drive will take you 30 minutes. What is your average speed?
60 divided by 30 = 20 miles per hour (mph)
____________ combines both the speed and the direction an object is moving.
Velocity
_____________ is any change in speed or direction of an object’s motion.
Acceleration
Name three types of acceleration:
Starting, speeding up, and slowing down
Velocity combines both speed and directions...true or false?
True. An example of a unit of velocity is miles per hour North. This is a good example because it tells you the speed (miles per hour) and a direction (North)
If you walk 1 mile per hour, then, in an hour you have walked __________ mile?
1
If you walk 2 miles per hour, then, in an hour you have walked _______ miles?
2
If you walk 3 miles per hour, then, in an hour you have walked _____ miles?
3
If you bike 12 miles per hour, then, in one hour you have biked _____ miles?
12
If you drive 60 miles per hour, then, in one hour you have driven ____ miles?
60
Patrick rides his bike 12 miles in 1 hour. What speed is Patrick traveling on his bike?(show your formula..show your work)
Speed=12miles/1hour
Speed=12 mph
