Newton 1
We call the resistance to a change in motion this.
What is inertia?
If something travels a total of 120 meters in 40 seconds, what was its average speed?
3 m/s2
The Unit of force is this.
What is the Newton?
When one billiard ball collides with another, what is conserved?
Energy/Momentum
What is the difference between speed and velocity?
direction
The unit for acceleration is written as...
What is m/s2?
The Moon orbits the Earth in a nearly circular orbit. The Earth's gravitational pull on the Moon is called this.
What is Centripetal Force?
an object in motion stays in motion unless acted upon by an outside force, is an example of which law?
Newton's first law
This law states F=ma.
What is Newton's 2nd law?
This is the tendency of an object to resist a change in its motion.
inertia?
A cat is sitting on a windowsill. What is the action force and what is the reaction force?
Action - cat sitting on the windowsill.
Reaction - windowsill pushing back against the cat.
One object pushing on another will always receive a push in return. True or false.
True
A ball hitting a bat and a bat hitting a ball is an example of this.
What is a force pair/Newtons 3rd law
As the fuel burns in a rocket and gases push against the rocket, moving it upward this explains which of Newtons laws.
Newton's Third Law
If you put a notecard on a cup, and a penny on top of the notecard and flick the card so the penny falls in the cup, which force is acting on the penny so it falls down?
gravity
A train takes 5 seconds to travel 15 meters. What is the train's speed?
3 m/s
What causes a ball that has been kicked across the ground to stop?
Friction
Objects with more mass need a greater ________ to accelerate
Force?
A car and a train are going the same speed. Why can the car stop a lot faster than the train?
Car has less inertia
What formula do we use to calculate speed?
Distance divided by time? (v=d/t)
What information does a scalar quantity tell us?
Magnitude
If two rocks with different masses are rolling down a hill, will the bigger rock, or smaller rock take more force to stop?
the bigger rock
An archer shoots an arrow towards a target. Name one force that will affect the arrow's movement.
Air resistance will slow the arrow; gravity will cause the arrow to move towards the ground; the arrow will stop when it strikes an object or hits the ground; the unbalanced force of friction will act opposite to the motion of the arrow until the arrow stops.
Dribbling a basketball is an example of which law?
What is Newton's third law
A ball bounces away when another ball hits it. Which law does this demonstrate?
Newton's 3rd law.
What information does a vector quantity tell us?
Magnitude and Direction
What is the strength of gravity on Earth?
9.8m/s
If you drop two rocks with different masses from the top of a building at the exact same time. Which one will hit first?