Science Exam

The greater the mass of an object,

• the easier the object starts moving

• The greater the in inertia

• the more balanced it is

• the more space it takes up

The force of gravity on a person or object on the surface of a planet us called,

• Mass

• terminal velocity

• weight

• free fall

The force that one surface exerts on another when the two rub against each other is called,

• acceleration

• gravity

• inertia

• friction

The law of universal gravitation states that any two objects in the universe that have mass,

• attract each other

• repel each other

• combine to provide a balanced force

• create friction

Forces can be added together only if they are,

• Acting on the same object

• balanced forces

• unaffected by gravity

• substantial

According to newtons third law of motion, when a hammer strikes and exerts force on a nail, the nail,

• Creates friction with the hammer

• disappears in the wood

• exerts an equal and opposite force on the hammer

• moves at a constant speed