Speed and Velocity and Acceleration
Forces 1
Forces 2
Simple Machines
Mixed Bag
100
What are the formulas for speed and velocity?
S= distance/time
V= displacement/time
They are both measurement/time
100
What is a force?
Any push or pull in a certain direction by an outside force.
100
What is Newton's First law of motion
Any object stays at rest or in a straight line until another force is acted upon it.
100
What are all 6 simple machines
Inclined Plane, Wedge, Lever, Pulley, Screw and Wheel and Axel
100
What is the unit for Force?
Newton
200
What is the difference between speed and velocity?
Velocity NEEDS THE DIRECTION. They are both some movement divided by time but velocity needs the compass direction.
200
What is Newton's Second Law
the change in motion (acceleration) is in the same direction of the net force (total) being applied to it. F=ma
200
What is Newton's third law?
if one object applies a force on a second object, then the second object applies and equal an opposite force.
200
What simple machine is this?
Lever
200
The more mass an object has does what to the acceleration
Increases it
300
If you push a dog on roller skates 11 meters and it takes 7 seconds to get there. What was its speed (nearest tenth)
1.6 m/s
300
When equal forces act on each other in opposite directions the net force is zero is called?
Balanced force
300
How much net force is in this picture and which direction is it moving?
200N to the left
300
What simple machine is this?
Pulley
300
Which cyclist experienced the strongest force from one snapshot to the other and how do you know?
Red helmet. Slowed down by the most.
400
If Naruto sprints 346m south toward the hidden village of the sand and it takes 36 seconds. What was his Velocity? (Nearest tenth)
9.6 m/s south
*The answer is wrong if you don't say south.
400
What happens if two forces are acting in the same direction on an object?
The object will speed up.
400
What is an objects tendency to resist a change in motion?
Inertia
400
What do machines do to help us?
It helps transport mechanical energy from one object to another. "Make work easier"
400
Using this picture, describe how the object was changing over time.
Increasing regularly, then constant speed, then increasing rapidly followed by a rapid decrease.
500
In what ways can you accelerate? (hint there are 3)
Speed Up
Slow Down
Change direction
500
What forces acts in the opposite direction of a moving object and slows said object down?
Friction
500
Which force is allowing the rocket to leave the Earth and why is it that it doesn't hover in place?
Thrust force from engines are stronger than all of the other forces combined.
500
Multiple Simple Machines working together to perform an action are...?
A complex machine?
500
Calculate the acceleration of the car from 6 to 7 seconds (a=[vf-vi]/t)
6-3/1 --> 3/1= 3 m/s^2