# Science Force test

### 16 terms by leon4

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### which of the following is an example of exerting a force? a. A child running through a field b. a train speeding down a track c. a carpenter hammering a nail d. an airplane soaring through the sky

c.a carpenter hammering a nail

### the greater the mass of an object, a. the easier the object starts moving b. the greater its inertia c. the more balanced it is d. the more space it takes up

b. the greater its inertia

### one way to increase acceleration is by a. increasing mass b. decreasing mass c. decreasing force d. increasing both force and mass proportionally

b. decreasing mass

d. friction

### the law of universal gravitation states that any two objects in the universe without exception, a. attract each other b. repel each other c. combine to provide a balanced force d. create friction

a. attract each other

### the achievement of lifting a rocket off the ground and into space can be explained by a. Newton's first law b. Newton's second law c. Newton's third law d. the law of conservation of momentum

c. Newton's third law

### forces can be added together only if they are a. acting on the same object b. balanced forces c. unaffected by gravity d. substantial

a. acting on the same object

### which of the following is an example of increasing friction intentionally? a. waxing skis b. adding grease to gears on a bike c. throwing sand on an icy driveway d. oiling a squeaky door

c. throwing sand on an icy driveway

mass

newton

inertia

fluid

### Newtons first law

an object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force

### Newtons second law

acceleration of an object is directly proportioned to the force, and is inversely proportioned to the mass of an object

### Newtons third law

when one object exerts a force on another object the second object exerts an equal but opposite force on the first object

Example: