Which Law?
a cannon flies backwards after it shoots
What is 3rd law? DOUBLE POINTS: Give another example of Newton's 3rd Law in action.
If you accelerate a 2.5 kg ball 4 m/s/s, what is the force you put on it?
10 N
a push or pull
What is force? double points: What is the SI unit for force?
What will happen to your weight if you moved to the moon?
It will go down. double points: What will happen to your mass?
What will happen to your weight if you moved to a more massive planet?
It will go up.
a boy flies over the handlebars of his bike when it hits a rock and stops suddenly
What is 1st Law?
If you accelerate a .25 kg ball at 0 m/s/s, what is the force you apply to it?
0 N
natural attraction between any two objects with mass
What is gravity? double points: What is the value of gravity on the surface of Jupiter?
What will happen if a galloping horse you are riding on suddenly stops?
You will fly off (over its head) or forward.
a measure of the amount of matter in an object
What is mass? double points: What is the SI unit for mass?
a MLB baseball pitcher can throw a ball harder then a Little League pitcher
What is 2nd law?
A car with a mass of 2550 kg reaches a velocity of 20 m/s in 4 seconds after starting from rest. What is the car’s acceleration?
5 m/s^2
the tendency of an object to resist a change in motion
What is inertia?
What will happen to a ball sitting in your yard if nothing but balanced forces act upon it for a year.
Nothing or it will not move.
A rocket and contents weigh 50,000 N. What is the minimum force required during take-off for it to lift off the ground?
50,001 N
A rower pushes water back and the boat moves forward.
What is 3rd law?
Who wins this tug of war? Team 1: Conley 1100N, Mrs. Crabtree 700 N, Mr. McClay 2000 N Team 2: Mrs. Gregory 750 N, Mr. Lansing 1750 N, Mr. Yeagle 1250 N
Team 1 DOUBLE POINTS: If the teams were pulling at 90deg angles to each other, what would the resultant force be?
as one variable increases, the other variable also increases.
What is Direct Proportion?
What will happen to a football you throw in outer space if you throw it away from any nearby objects?
It will go in a straight line at a relatively constant velocity until an unbalanced force acts upon it?
astronomer and physicist who co-founded calculus, suffered from mercury poisoning, knighted by Queen Anne, formulated universal gravitation and devised 3 laws to explain motion
Who is Sir Isaac Newton? double points: What country did Newton live in?
A person’s weight is a result of gravity.
What is 2nd law?
A person weighs 425 N on the Earth. The gravity on Europa is 13% that of Earth's. What is the person’s mass and weight?
Mass - 43.4 kg
Weight - 55.3 N
as one variable increases, the other decreases.
What is Inverse Proportion?
If you are floating in outer space, what will happen to YOU after you throw a football in a certain direction?
You will be pushed in the opposite direction with a force equal to what you place on the football.
These variables are inversely proportional.
What is mass and acceleration?