to change the speed or direction
gives energy to an object; a push or pull
the force of attraction that exists between all objects in the universe
force that opposes the motion of an object
mass times gravity
m x g
distance divided by time
d / t
Law of conservation of mass
mass remains constant over time
a car traveling at a high rate of speed slows down. This is an example of:
we are held to the Earth by the force of:
the opposing force between a car's wheels and the road is:
a child pulling a wagon is an example of a:
an airplane travels 215 miles in 20 minutes. How many miles per minute does it travel?
215 / 20 = 10.75 miles per minute
unit of measurement for weight
a person has a mass of 68 kg. What is his weight on Earth? *Gravity on Earth is 9.8 m/s2
68 x 9.8 = 666.4 Newtons
a car travels 85 miles in 1.25 hours. how many miles per hour does it travel?
85 / 1.25 = 68 miles per hour
a person has a mass of 50 kg. What is her weight on Jupiter? *Gravity on Jupiter is 2.5 times greater than on Earth.
9.8 x 2.5 = 24.5 (gravity on Jupiter)
50 x 24.5 = 1,225 Newtons
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