NEWTON
Interaction between two objects that causes a change in the motion of the objects. aka a push or pull
force
force that happens when two surfaces rub against each other; like a sticky force that can make things harder to move smoothly.
friction
Greg, Matt, and Stephen work together to hold the door shut to keep out the zombies. Greg pushes with a force of 15 N, Matt with 12 N, and Stephen with 22 N. What is their net force on the door?
49 N against the door
Calculate the speed for a car that went a distance of 125 kilometers in 2 hours time.
62.5 km/hr
A renowned physicist and mathematician from England who discovered in 1687 the correlation between force and motion
isaac newton
is what keeps a block from sliding or moving on the table when it's not being pushed or pulled
STATIC FRICTION
. Jeff is pushing a rock up a hill with a force of 85 N. If Chris comes to help and Chris can push with a force of 60 N, what is the net force on the rock?
145 N going up
A baseball is thrown a distance of 20 meters. What is its speed if it takes 0.5 seconds to cover the distance?
40 m/s
An object in motion will stay in motion at the same speed and in the same direction unless acted on by an unbalanced force
1ST LAW
When you pull a block, this type of friction takes over, it resists motion as the block slides across a surface.
sliding friction
A boy takes his dog for a walk. The dog is pulling with a force of 30N to the right and the boy is pulling backwards with a force of 18N. What is the net force on them?
12 to the right
If Steve throws the football 50 meters in 3 seconds, what is the average speed (velocity) of the football?
16.7/ 17 m/s
States for every action, there is an equal but opposite reaction.
3RD LAW
the surface of the bowling ball and the surface of the bowling lane have tiny bumps and ridges that rub against each othe
rolling friction
Michael and Andrew are pushing a desk across the room. To be funny, Michael decides to push against Andrew instead of with him. Michael can push with a force of 30 N. Andrew can only push with a force of 28 N. In which direction will the desk move?
2 N towards Andrew
Tina’s calculations of the tarantula found that the spider was able to cover 20 centimeters in 5 seconds, what was the average speed of the spider?
4 cm/s
the acceleration of an object by a force is inversely proportional to the mass of the object and directly proportional to the force
2ND LAW
hen a parachute is open. It creates air resistance and slows you down; it creates a force that resists your motion through it.
fluid friction
4 people decided to play tug of war, Both of the people on the left are pulling with a force of 55N to the left. On the right side of the rope, one person is pulling with 35N to the right, and the other person is pulling 20N to the right. What is the net force on the rope?
55 to the left
Sarah backstrokes at an average speed of 8 meters per second, how long will it take her to complete the race of 200 meters length?
25 secs