Summer School Physical Science - CH 3 - Section I Quiz

The upward force exerted on an object falling through air is _____________.

• terminal velocity

• momentum

• air resistance

• weightless

The relationship among mass, force, and acceleration is explained by ____________.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• the conservation of momentum

A feather will fall through the air more slowly than a brick because of ___________.

• gravity

• air resistance

• terminal velocity

• momentum

In the absence of air, a penny and a feather dropped from the same height will ______________.

• faļl at different rates

• float

• fall at the same rates

• not have momentum

Acceleration due to gravity is ___________.

• 98 m/s²

• 9.8 m/s²

• 9.8 m/s

• 0.98 m/s

According to Newton's second law of motion, ____________.

• F= my

• F= ma

• F= pv

• F= pa

a push or a pull exerted on an object

• force

• field

• weight

• friction

force that opposes the sliding motion between two touching surfaces

• friction

• net force

• field

• air resistance

tendency of an object to resist any change in its motion

• inertia

• gravity

• free fall

• terminal velocity

states that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced force acts on it

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Law of Conservation of Momentum