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Forces/newtons
Review for Test
Question | Answer |
---|---|
The property of matter that resists changes in motion is___ | FRICTION |
Newton's third law of motion describes___. | ACTION AND REACTION FORCES |
A grape may roll off your cafeteria tray when you stop suddenly because of____. | INERTIA |
If a person travels away from Earth their weight | DECREASES BECAUSE GRAVITY DECREASES |
What kind of friction is a person swimming in the lake? | FLUID FRICTION |
A push or a pull on an object is a definition of? | FORCE |
The two forces acting on a falling object are____and____. | GRAVITY and AIR RESISTANCE |
What is the product of an object's mass and velocity ? | MOMENTUM |
What does a spring scale measure? | WEIGHT and FORCE |
What unit is force measured in? | NEWTONS |
What is a change in velocity? | ACCELERATION |
What forces act on a falling feather? | GRAVITY and AIR RESISTANCE |
Two balanced forces with have a net force equal to___. | ZERO |
As mass increases, what does the gravitational force do? | DISTANCE DECREASES |
Which of Newton's laws is it when a nail is struck by a hammer? | NEWTON'S THIRD |
A person throwing a javelin shows shows what type of motion? | PROJECTILE MOTION |
Which item has the most momentum going at the same speed? A volleyball or a bowling ball? | BOWLING BALL |
When a bus stops what causes the body to move? | INERTIA |
In a head on collision the body continues to move____. | FORWARD |
What is the mass of an object that requires a force of 10 N to accelerate it at 1.5m/s/s? | 6.7 Kg |
How much gravitational force on a sky diver whose mass is 85 Kg on Earth? | 85x9.8=833 N |