1
What is the difference between velocity and speed?
Velocity has direction but speed does not have
Stationary
What is another name for Newton's first law of motion?
Inertia
Who invented three laws of motion?
Pulling rubber band from to sides, with 30 power. Which law of motion?
III law of motion
What is the push or pull on an object that can cause it to accelerate called?
Force
What is the net force?
The net force is the sum of all forces that act on an object.
How to find the time?
Distance/speed (distance divide by time)
A _____ is a pull or a push.
force
In a tug of war, when one team is pulling with a force of 100 N and the other 80 N, what is the net force?
Fnet=20N
A Ferrari Enzo is able to reach a speed of 134 miles per hour (60 meter/sec) from 0mph in 11 seconds. Assuming constant acceleration, how far would the Enzo travel in this amount of time?
330 meter
What are motion and power?
Motion is the action or process of moving or being moved.
Power is the ability or capacity to do something or act in a particular way.
A person not wearing a seatbelt flies through a car window when someone slams on the breaks. What law is this an example of?
I law of motion
A boy pulls a wagon with a force of 6N east and another boy pushes it with a force of 4N east. What is the net force?
10N
To skate 100 meters in 20 seconds, a skater must skate at a speed of ....m/s
5m/s
speed that does not vary
constant speed
What is the formula of II law of motion?
F=ma
The force acting on an object is equal to the mass of that object times its acceleration.
II law of motion
What are balanced forces?
Forces where the effect of one force is cancelled out by another
Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly. What law is this an example of?
II law of motion
Which law explains why when you put a book on a table the table pushes on the book
3rd law of motion
Which of Newton's Three Laws does the following statement satisfy? Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
Newtons first law
When you hold an apple above your head, how many force pairs act on the apple?
2
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction. What law is this an example of?
Third law of motion
A car is moving 50 km.hr skids 15 meters with locked brakes. How far will the car skid with locked brakes if its is moving at 150km/hr
A car skids 135m.