6 week exam

6 week exam

by K. Perigord

​Speed Equation

Multiple Choice

What is the speed of a car travelling 50m in 4s?

• 200 m/s

• 12.5 m/s

• 12.5 m

• 200m

Multiple Choice

How far does a lorry move if it is travelling at 12m/s for 180s?

• 2160 m

• 0.06 m

• 15 m

• 21.6 m

Multiple Choice

How long does it take a car to travel 40m at 12m/s?

• 4.8 s

• 480 s

• 3.33 s

• 33.3 s

​Acceleration

​

Multiple Choice

When using the Acceleration formula, if a problem asks you to find" t", which of the following equations would you use?

• t = vf-vi/a

• t = vf - vi

• a = vf-vi/t

Multiple Choice

When is an object accelerating?

• speeding up

• slowing down

• speeding up and slowing downs

• speeding up

  slowing down and

  changing directions

Multiple Choice

A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.

• 30 m/s
• 24 m/s²
• 9 m/s²
• 81 km/hr

​

​p = momentum (kg*m/s)

​

​m = mass (kg)

​

​v = velocity (m/s)

​

​

​

​Momentum

Multiple Choice

Momentum is a ____________________ quantity

• science
• scalar
• vector
• energy

Multiple Choice

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Multiple Choice

Determine the momentum of 1000-kg car moving northward at 20 m/s......... 

• 20000 N
• 20000 Joules
• 20000 Kg * m/s
• 20000 kg * m/s north

Multiple Choice

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

Multiple Choice

A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?

• 74.4 kg
• 6030 kg
• 0.0134 kg
• 80 kg

Multiple Choice

A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?

• 8 m/s
• 32 m/s
• 0.125 m/s
• 18 m/s

​F = MA

​

Multiple Choice

If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

Multiple Choice

If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?

• 10 m/s^2
• .1 m/s^2
• 100 m/s^2
• 1 m/s^2

Multiple Choice

Unit of mass

• m/s 2
• m/s
• newtons
• kg

Multiple Choice

A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s². What is the mass of the skier? The answer to this question is most likely (HINT: Look at the units!!!) - 

• 66 N
• 66 m/s²
• 66 kg

Multiple Choice

What is the SI unit used to measure force? 

• pounds 
• grams 
• newtons 
• kg/ m²

​NEWTON'S 3 LAWS

​

​1. INTERTIA:

An object in motion will remain in motion unless acted on by a force.

​An object at rest will remain at rest unless acted on by a force.

​

​2. F = ma

​ - the amount acceleration on an object depends how much force and how heave that object is.

​

​3. Action-Reaction

​- every action has an opposite and equal reaction.

Multiple Choice

An object will accelerate in the direction of the force applied to it.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

Multiple Choice

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

Multiple Choice

 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?

• 26.75 kg
• 63.69 kg 
• 263.3 kg 
• 1123.5 kg

Multiple Choice

Speed in a direction is called

• Momentum
• Velocity
• Speed
• Inertia

Multiple Choice

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions
• Because they are elephants
• Because they are pulling away from each other.

​ENERGY TRANSFER

​S - SOUND

​C - CHEMICAL

​R - RADIATION

​E - ELECTRICAL

​A - ATOMIC

​M - MECHANICAL

​

​

​T- THERMAL

Multiple Choice

Which one of the energy types in the picture is the same as "Radiation"

• Light

• chemical

• heat

• mechanical

Multiple Choice

Heat is the movement of ______.

• radiation
• thermal energy
• cold
• fire

Multiple Choice

Heat from the sun travels to Earth by _____.

• conduction
• convection
• insulation
• radiation

Multiple Choice

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Gravitational

Multiple Choice

What kind of energy is represented in this picture?

• Thermal
• Potential
• Nuclear
• Mechanical

Multiple Choice

What kind of energy does this device use?

• Chemical
• Electrical
• Thermal
• Chemical

Multiple Choice

A battery converts what type of energy to another?

• sound to kinetic
• light to heat
• mechanical to electrical
• chemical to electrical

Multiple Choice

The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?

• thermal to light
• gravitational to potential
• radiant to electrical
• chemical to light

Multiple Choice

Wind turbines and windmills convert what energy to another?

• Kinetic to electric
• Gravitational potential to electric
• Mechanical to potential
• Thermal to sound

​Kinetic Energy

​Ek or (Ke) = Kinetic Energy (J)

​

​m = mass (kg)

​

​V = velocity

Multiple Choice

energy of motion

• kinetic energy

• potential energy

• movement

• work

Multiple Choice

the standard international unit for energy

• newton

• joule

• kilogram

• m/s/s

Multiple Choice

how far from one point to another

• speed

• distance

• movement

• length

Multiple Choice

How much KE does a moving 6 kilogram object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 9 J
• 2 J

Multiple Choice

A moving 10 kilogram object has 20 Joules of KE. What is its velocity?

• 2 m/s
• 4 m/s
• 200 m/s
• 10 m/s

​Potential Energy

Multiple Choice

At which point does the ball has the greatest gravitational potential energy (GPE)?

• A

• G

• D

• C

• G

Multiple Choice

Calculate the gravitational potential energy of a car with a mass of 1300kg at the top of a 52m high hill.

• 4.86 x 10⁵ J

• 6.56 N

• 6.62 x 10⁵ J

• None of the answers are correct

Multiple Choice

A diver has 3400J of gravitational potential energy after stepping up onto a diving platform that is 6 meters above the water. What is the divers mass in kilograms?

• 85kg

• 64m

• 58kg

• None of the answers are correct

Multiple Choice

In order to work, a circuit must be:

• Open

• Closed

Multiple Choice

Which formulas represents Ohm's law?

• V=IR
• R=IV
• I=RV

Multiple Choice

What is the unit for resistance?

• Volts
• Amperes
• Ohms

Multiple Choice

Electricity is the flow of _________.

• protons
• neutrons
• electrons

Multiple Choice

this is the symbol for a _____?

• switch
• light 
• battery
• wires

Multiple Choice

What is the symbol for Current

• C
• Q
• I
• A