A boy is running along the sidewalk and he is not looking and he runs into a tree and, he falls down to a complete stop. This is an example of which of which law?
Newton's first Law
100
Mrs.Wilson is pushing the desks and her table to the left side of her classroom. She is done pushing the desks. Now she has to push her table whose mass is 20 kgs .If she pushes it with with an acceleration of 2.5m/s²,what is the force applied to the table?
F=m*a
F=20*2.5
F=50 N to the left
100
Kinetic energy, is energy that is in ______.
Motion
100
You draw back the arrow on a bow , and then you let it release. Where is the potential energy located?
When you pull the arrow back
100
Who discovered the laws of motion?
Sir Isaac Newton
200
When you are swimming and you push the water behind you, then the water pushes you forward. This is an example of which Law?
Newton's third law
200
Mark is throwing a javelin, If he uses a force of 50 N west to throw the javelin whose mass is 4 kg what is the acceleration of the javelin?
F=m*a
50=4a
a= 12.5 m/s²
200
You are on a roller coaster and you are climbing up the hill and, when you get to the peak you drop. Where is the Kinetic energy in the example?
The drop
200
Potential energy, is energy that is ______.
Stored energy
200
When a demolition ball swings. What kind of energy is this? Which of Newton's laws is involved in this description?
What is kinetic energy and, what is Newton's first law.
300
If I rolled a tennis ball down an incline and, then I rolled a soccer ball down the same incline then, the soccer ball will have more force because? And which Law does this example depict?
1)The soccer ball has more mass
2)Newton's Second Law
300
An apple is falling from the height of 5 meters hits Isaacs head with a force of 2 N, what is the mass of the apple(in kilograms)?
Answer 3) F=m*a
2= 9.8m
9.8 9.8
0.204 kg=m
300
You pull a rubber band back on your finger then, you release it. Where is the kinetic energy located?
The release
300
You push down on a spring and, then you let it go. Where is the potential energy located?
pushing down on the spring
300
A boy is pushing a shopping cart and, an adult adult is pushing another. Which person will have a easier time pushing the cart? And Why?
The adult because he/she has more mass than the boy.