What is the mathematical formula for acceleration
F= m x a
An object in motion stays in motion, an object at rest stays at rest until acted on by an outside force.
Newton's 1st Law
Which type of wave is used in medical imaging to see bones?
X-rays
A car travels 180 km in 3 hours. What is its average speed?
60 km/h
What happens when light bounces off a surface?
Reflection
When an object is not in motion it has an ________________ force.
Balanced
This is the Law of Inertia
Newtons First law
Which waves require a medium to travel—mechanical or electromagnetic?
Mechanical waves
A runner covers 400 m in 50 s. What is their average speed?
8 m/s
Which EM wave has the most energy?
Gamma rays
According to Newton’s Second Law, increasing the force applied to a mass has this result.
Increases acceleration of the object
A box is being pushed to the right across the floor. What force is acting on it on the floor?
Friction
What type of electromagnetic wave is used for cooking food in microwaves?
Microwaves
A car accelerates from 0 to 30 m/s in 10 seconds. What is its acceleration?
3 m/s2
What happens when light bends entering a different medium?
Refraction
What is the Net Force?
What is 0?
A bowling ball collides with a set of bowling pins (at rest) with a force of 15N. What is the force the pins exert on the bowling ball?
15N
What type of wave is light?
Transverse wave
A cyclist rides 45 km in 1.5 hours. What is their speed?
30 km/h
What is the Net Force?
What is 50?
An object at rest has this velocity.
Zero
If you want to increase the acceleration of a baseball when you throw it, what must you increase to make this happen?
Force
True or False: Electromagnetic waves can travel through space.
True
A car slows from 25 m/s to 5 m/s in 5 s. What is its acceleration?
Which wave property is the number of waves passing a point per second?
Frequency