Physics Newton's Law

Front

Force needed to keep cannonball moving in space

Back

Zero (no force needed)

Front

Mass comparison: 1 kg of feathers vs 1 kg of iron

Back

Same mass

Front

Force of gravity on 10-kg brick

Back

10 times that on 1-kg book

Front

Reaction to bat hitting ball

Back

Force of the ball against the bat

Front

Gravitational force on person: 440 N

Back

Force on Earth: 440 N

Front

Friction force

Back

Opposite to object's motion

Front

Law of Inertia

Back

Applies to both moving and nonmoving objects.

Front

Object with twice the mass

Back

Twice the inertia

Front

Weight of a 10-kg object on the Moon

Back

Less than on Earth

Front

Acceleration and mass relationship

Back

Inversely proportional