MATTER IN MOTION

• Speed
• Average speed
• Velocity
• Acceleration
• Net force

SPEED

• Speed is the distance traveled by an object divided by the time taken to travel the distance
• Formula: Speed = distance/time
• A biker rode 40 meters(m) in 20 seconds(s), what is his speed?
• His speed is 2 meters per second; 2 m/s
• Fun fact: The highest speed reached by a bicycle was 167.04 mph.

AVERAGE SPEED

• Average speed is the total distance traveled divided by the total time taken.
• Formula: Speed = Total distance/ Total time
• A car travels 100 miles in 2 hours. What is the average speed?
• The average speed is 5mph
• Fun fact: Electricity runs at 186,000 miles per second.

VELOCITY

• Velocity is the speed of an object in a particular direction
• Formula: Velocity= Speed/Time
• The train went west at 200mph in 4 hours. What is its Velocity?
• The train went 50mph west.
• Fun fact: The earths velocity is always changing.

ACCELERATION

• Acceleration is the rate at which velocity changes over time.
• Formula: Acceleration= final velocity- starting velocity/ time
• A car accelerates from rest to a speed of 36km/h in 20 seconds. What is the acceleration of the car in m/s 2?
• The car accelerates .5 m/s2
• Fun fact: A decrease in speed is called deceleration.

NET FORCE

• Net force is the combination of all the forces acting on an object.
• Formula: Net force= Force1 + Force2 + ... + ForceN
• You and your brother a pushing your car with a dead battery with 20N and 25N in the same direction.
• What is the net force applied in the car? ; 45N
• Fun fact: Net force is Isaac Newton's second law of motion.

THE END