Speed and Velocity and Acceleration
Forces 1
Forces 2
Work
Simple Machines
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 is Work?
The energy transferred to or from an object via the application of force along a displacement.
100
What are all 6 simple machines
Inclined Plane, Wedge, Lever, Pulley, Screw and Wheel and Axel
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.
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 is the formula for work?
W=FxD
200
Multiple Simple Machines working together to perform an action are...?
A complex machine?
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
Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?
200 J
300
What do machines do to help us?
It helps transport mechanical energy from one object to another
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
How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N?
4000 J
400
What simple machine is this?
Lever
500
In what ways can you accelerate? (hint there are 3)
Speed Up
Slow Down
Change direction
500
What is momentum and what is its formula?
The measure of how hard it is to stop a moving object.
p= m x a
500
What is the force when a an object is pulled in a circular motion ?
Centripetal Forces
500
Tommy does 15 Joules of work to push the pencil over 1 meter. How much force did he use?
15 N
500
What simple machine is this?
Pulley