NFL Newton's second law

Who described the three laws of motion in 1687?

• Albert Einstein

• Nikola Tesla

• Galileo Galilei

• Sir Isaac Newton

What does Newton's Second Law of Motion state?

• Gravity is the force that attracts two bodies toward each other.

• The force acting on an object is equal to the mass of that object times its acceleration.

• An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a force.

• For every action, there is an equal and opposite reaction.

What is the formula mentioned for Newton's Second Law of Motion?

• F = G(m1m2/r^2)

• F = ma

• v = u + at

• E = mc^2

What concept in physics is described as the force multiplied by the time the force is applied?

• Velocity

• Impulse

• Momentum

• Acceleration

How long is an NFL kicker's foot in contact with the ball during a kick?

• Two seconds

• 8-one-thousandths of a second

• Half a second

• One second

What does Morten Andersen compare the kicking leg to when explaining the force of the kick?

• A whip

• A catapult

• A spring

• A hammer

How many steps do NFL kickers take to the ball to reduce the chance of a block?

• Two steps

• Five steps

• Three steps

• Four steps

What does Morten Andersen call the moment when your plant foot hits the ground next to the ball?

• The moment of impact

• The moment of truth

• The final step

• The decisive moment

According to the text, what does the impulse applied to the football during a kick change?

• The ball's mass

• The ball's speed

• The ball's shape

• The ball's color