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Unit F Chap 2

5th grade Science Unit F Chapter 2

QuestionAnswer
To measure the movement of an object, one must first locate the _______________ of that object position
The ________________ of an object is the distance it travels in a given period of time. speed
The term used to describe the speed of an object in a certain direction is ____________________. velocity
A change in the direction or speed of an object is called ____________________. acceleration
A truck moving at a high rate of speed is difficult to stop because of its _______________________, which is a product of its velocity and mass. momentum
The first law of motion states that an object that is not moving will remain at rest because of its _____________. inertia
The force that you exert on an object at rest is called ________________. action force.
For every action force there is an equal adn opposite reaction force. The force that pushes or pulls is the ___________________. reaction force
An __________ travels around another object as a result of inertia and gravity working together. orbit
According to ________________________, all objects are attracted to all other objects. law of universal gravitation
The first law of motion say that an object at rest will remain at rest unless ________________________________________________________________________. an outside force acts on it.
According to the third law of motion, for every action there is _________________________. an equal and opposite reaction.
When you observe an object, you know it is moving because ___________________. its position changes.
Suzette keeps her schoolbooks in a basket on the handlebars of her bicycle. When she rides, the books seem not to be moving because_____. from her frame of reference, the books are staionary.
If one car moves ahead of another car that is traveling in the same direction, the cars _____________. do not have the same velocity because they are traveling at different speeds.
The breakes on an adult bicycle must be stronger than the brakes on a child's bicycle because_____________? an adult rider will have more momentum.
Inertia explains why __________________________________________. people in a car move forward in their seats when the car stops quickly.
If an equal force acts on a golf ball and a football, ___________________________ will have the greatest acceleration.
Some people think that _________________ just means speeding it can up but it can also mean slowinng down. acceleration
When track runners finish a race, they don't just suddenly stop at the finish line. The runners' ___________ carries them well past the finish line before they can slow down and then stop. momentum
Work is measured using _________ and force is measureed using _________________. joules and newtons
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