Speed
What is the formula to calculate speed?
Speed= Distance divided by time
Do forces always come in pairs?
True
Action force and Reaction force
Music coming from a radio is an example of which type of energy?
Sound energy is Kinetic energy
Sound travels in waves, and waves are moving.
The force created when two objects rub against each other is?
Friction
When an elephant pushes a mouse this is an example of what?
unbalanced forces
Collin runs 600 meters in 30 seconds. What is his speed?
600 divided by 30
20 meters per second
Which law matches this definition?
An object in motion will stay in motion until acted upon by an unbalanced force, and an object at rest will remain at rest unless acted upon by an unbalanced force.
Newton's first law or
The law of intertia
Pulling back the band on a slingshot is an example of what type of energy?
Elastic potential energy
A force that pulls an object towards the center of the Earth
Gravity
That child will move a greater distance than the child with more mass.
If Jessie is biking at 13mps at a constant speed and went 39 miles, how long was she biking for?
3 hours
39 divided by 13=3
This descrives which of Newton's Laws?
Andrea punches the punching bag with 10 N of force and the punching bag hits her hand with 10 N of force.
Newton's Third Law
for every action there is an equal and opposite reaction.
Mechanical energy is what?
When a force moves an object
Work
Jody is using a force of 45N to push an object whose mass is 9kg. What will be the acceleration of the object?
45 divided by 9
5 meters per second squared
Madelyn is driving for 30 minutes. If she is going at a speed of 30 miles per hour how many miles has she driven?
30 minutes is half of an hour.
30 miles divided by 2
15 miles
The heavier an object is the more force will be required to move it is an example of which of Newton's Laws?
Newton's Second Law
After you eat an apple you have what type of energy?
Potential energy
because your body can now use those calories to do work when it is ready.
Energy is neither created nor destroyed
The Law of conservation of energy
On a roller coaster where will you have the greatest potential energy?
At the top of the highest hill
Tom throws a baseball from third base to first base. The ball travels 127 feet is 4 seconds. What is the speed of the ball?
127 divided by 4
31.75 feet per second or
31 3/4 feet per second
Calculate
How much force does Mike need to move a 12kg object with an acceleration of 5m/s squared.
12*5= 60N
Getting hot when you hike or bike is an example of what type of energy?
Thermal energy
Stored energy that depends on an object's mass, position, or shape is...
potential energy
On a roller coaster where will you have the greatest kinetic energy?
At the bottom of the highest hill