Newton's 1st Law
Newton's First law is known as the law of...
Inertia
What equation can be expressed by Newton's 2nd Law?
F=ma
When you jump off the ground, your feet push down. What force does the ground apply back?
The ground pushes up with the same force.
If an object is acted upon by unbalanced forces, its motion will change.
True, a force causes a change in motion.
The second law says that acceleration is _______ to force.
proportional
Why does a swimmer move forward when pushing water backward?
An object with more mass has more or less inertia?
More inertia
The stronger the force on an object, the greater or smaller is its acceleration.
Smaller acceleration.
A skateboarder pushes backward on the ground. What reaction makes the skateboard roll forward?
The ground pushes the skateboard forward.
In space, why would a soccer ball keep moving forever once kicked?
With no unbalanced forces to act on it, the ball continues its motion forever.
Why does a soccer ball accelerate more than a bowling ball when the same force is applied?
A soccer ball accelerates more because it has less mass than a bowling ball.
When a balloon lets air out, why does it move opposite the air?
The escaping air pushes the skateboard forward.
What does Newton's 1st Law state?
An object stays at rest or keeps moving unless a force acts on it.
What does Newton's Second Law say?
It says that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What is Newton's 3rd Law about?
For every action, there is an equal and opposite reaction.