PLTW Flight & Space - Activity 1.2 Quiz

Which of Newton's laws of motion is this?

An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• Newton's First Law

• Newton's Second Law

• Newton's Fifth Law

Which of Newton's laws of motion is this?

Acceleration is produced when a force acts on an object. The greater the mass of the object, the greater the amount of force needed to accelerate the object. The force acting on an object is equal to the mass of the object multiplied by its acceleration (F = m x a).

• Newton's Second Law

• Newton's Law of Speed

• Newton's Third Law

Which of Newton's laws of motion is this?

For every action there is an equal and opposite reaction.

• Newton's First Law

• Newton's Cradle

• Newton's Third Law

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Which of the following scenarios represents an example of Newton’s first law of motion?

• A hockey puck sliding on ice will eventually stop because of the friction of the ice on the puck.

• A wheelbarrow that is full of rocks is harder to move than one that is empty.

• When a tennis ball hits the racket, it bounces off the racket in the opposite direction.

Which of the following scenarios represents an example of Newton's second law of motion?

• A bowling ball hits the pins and causes them to fall.

• A bottle stands still on a table.

• The same push is applied onto a full shopping cart and an empty one. The empty one rolls away a much longer distance than the full one does.

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Which of the following scenarios represents an example of Newton’s third law of motion?

• A meteor floats in space, until it enters a planet’s orbit.

• The same engine is installed in a small vehicle and in a larger, heavier vehicle. Using the same amount of throttle, the smaller vehicle accelerates much faster than the larger one.

• When the springs on a pogo stick are pushed down, they spring back up making the stick jump up in the air.

The force of ________ opposes the force of thrust.

The force of ________ opposes the force of weight.

Which of the following is the correct definition of magnitude?

• The force that makes it difficult for one object to slide along the surface of another or to move through a liquid or gas.

• The means by which aircraft and spacecraft are pushed forward.

• The size, strength, or quantity of something.

Density altitude is the density of the air, which varies at different altitudes. The higher the altitude, the less dense the air.

• True
• False