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Motion

100

How do you calculate the velocity of an object? 

df-di /t

200

What is the speed of an object that traveled 85m in 12 seconds?

7.1m/s

300

What is the difference between speed and velocity?

Velocity is a vector, speed is a scaler. Velocity is both the speed and direction of an object. 

400

Calculate the acceleration of an object that slowed down to 2m/s from 20m/s in 4s. 

-4.5m/s²

500

Which object has more momentum: A 85kg man walking at 1.2m/s or a .083kg bullet traveling at 1200m/s?

p_m= 102kgm/s

p_b= 99.6kgm/s

Forces

100

What are the units for force? 

Newtons

200

What is the net force on an object with a mass of 60kg and an acceleration of 4m/s²

240N

300

What happens to the force due to gravity as an object moves further away from Earth's surface? 

It decreases

400

What is the weight of a cat that has a mass of 5kg? 

49N

500

Calculate the net force acting on a 32kg object that is falling towards earth (g=9.8m/s/s) and experiencing 80N of air resistance. 

Fnet= Fg - Fd

Fnet= 233.6N

Energy

100

Name two energy storage modes:

gravitational potential, kinetic, chemical, heat, electrical, mechanical, electromagnetic, 

200

Identify the following energy transfer: 

The sun's rays being absorbed by a plant in photosynthesis.

electromagnetic (radiation) --> chemical energy

300

Calculate the kinetic energy of a ball that has a mass of 5kg and is moving at 6m/s

KE= 1/2mv²

KE= 90J

400

What form of energy is some always lost as? i.e. Why are energy transformations not 100? efficient? 

heat, thermal energy

500

How much work is done by a person who lifts a 40kg dumbbell 2 meters?

W= F x d 

W= 784J

Waves

100

What do all waves do? 

Transfer energy 

200

Calculate the speed of a wave that has a frequency of 30Hz and a wavelength of 0.25m

V= 7.5m/s 

300

List two different types of light waves

microwaves, radio, visible, ultraviolet, infrared, gamma, x-ray 

400

What is the main difference between mechanical waves and electromagnetic(light) waves?

Mechanical waves require a medium to travel.

500

Which type of light wave (electromagnetic) has the most energy? Does it also travel the fastest? 

Gamma waves, no all light travels at the same speed. 

Chemistry

100

Why are the noble gasses (group 18) not reactive elements? 

They have full outer shells (8 e-)

200

What information does the group number on the periodic table give us?

The number of valence electrons the elements have. 

300

What type of bond would form between Calcium and Fluorine? 

Ionic 

400

Identify the following chemical reaction: 2NaCl → 2Na + Cl2 

Decomposition

500

Which compound will most likely be formed when lithium (Li) and nitrogen (N)are chemically combined?

LI₃N