35 terms

kjoshTEACHER

P = MV

P = momentum

P = momentum

What is the formula for momentum?

Mass = Momentum divided Velocity

M = P/V

M = P/V

What is the formula for mass (if you know velocity)?

V = P/M

OR: V = distance/time

Remember P = MV (Momentum = Mass x Velocity)

OR: V = distance/time

Remember P = MV (Momentum = Mass x Velocity)

What is the formula for velocity?

A = F/M

Acceleration = Force/Mass

OR

Acceleration = Velocity/Time

In other words, you are increasing or decreasing velocity over time

Acceleration = Force/Mass

OR

Acceleration = Velocity/Time

In other words, you are increasing or decreasing velocity over time

What is the formula for acceleration?

F = M x A

Force = Mass x Acceleration

Force = Mass x Acceleration

What is the formula for force?

= What is Newton's Second Law?

= What is Newton's Second Law?

W = M x G

G is gravity

Note: This is the same formula as

F = M x A

Force = mass x acceleration

Force is weight and gravity is the acceleration.

G is gravity

Note: This is the same formula as

F = M x A

Force = mass x acceleration

Force is weight and gravity is the acceleration.

What is the formula for weight?

Power = work / time

What is the formula for Power? *

force x distance

force / distance

work x time

work / time

force x mass

force / mass

force x time

force / time

force x distance

force / distance

work x time

work / time

force x mass

force / mass

force x time

force / time

Newtons (N)

Note:

Kilograms (kg) = Mass

Meters per second square (m/s^2) = Acceleration

Meters per second (m/s) = Velocity

Note:

Kilograms (kg) = Mass

Meters per second square (m/s^2) = Acceleration

Meters per second (m/s) = Velocity

Which is a unit of Force? *

Kilograms (kg)

Newtons (N)

Meters per second square (m/s^2)

Meters per second (m/s)

Kilograms (kg)

Newtons (N)

Meters per second square (m/s^2)

Meters per second (m/s)

Meters per second square (m/s^2)

Which is a unit of acceleration? *

Kilograms (kg)

Newtons (N)

Meters per second square (m/s^2)

Meters per second (m/s)

Kilograms (kg)

Newtons (N)

Meters per second square (m/s^2)

Meters per second (m/s)

kilograms x meters per second (kg m/s)

P = M x V

Momentum = Mass x Velocity

P = M x V

Momentum = Mass x Velocity

Which of the following is a unit of momentum? *

meters per second (m/s)

kilograms (kg)

newtons (N)

kilograms x meters per second (kg m/s)

meters per second square (m/s^2)

meters

meters per second (m/s)

kilograms (kg)

newtons (N)

kilograms x meters per second (kg m/s)

meters per second square (m/s^2)

meters

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. = inertia

What is Newton's First Law?

For every action, there is an equal and opposite reaction.

Ex. When you shoot a cannon the cannonball moves forward very fast and the cannon moves backwards.

Ex. When you shoot a cannon the cannonball moves forward very fast and the cannon moves backwards.

What is Newton's Third Law?

Newtons

= force that would give a mass of one kilogram an acceleration of one meter per second per second,

= force that would give a mass of one kilogram an acceleration of one meter per second per second,

What is the measure of weight?

9.8 Newtons

Because the gravity on earth is 9.8 m/s²

Because the gravity on earth is 9.8 m/s²

What is the weight of 1 KG on earth?

Because the cannon has more mass.

Remember Newton's Third Law. For every action, there is an equal and opposite reaction.

P = M x V (Momentum = Mass x Velocity)

so

V = P/M

The momentum is the same for the cannonball and the cannon but the velocity is more for the cannonball because it has less mass.

Remember Newton's Third Law. For every action, there is an equal and opposite reaction.

P = M x V (Momentum = Mass x Velocity)

so

V = P/M

The momentum is the same for the cannonball and the cannon but the velocity is more for the cannonball because it has less mass.

Why is the velocity of the cannonball (going forward) much more than the velocity of the cannon (moving backward)?

Fluid Friction

Which type of friction is experienced by an object that is falling through the air.

-Sliding Friction

-Rolling Friction

-Fluid Friction

-No Friction

-Sliding Friction

-Rolling Friction

-Fluid Friction

-No Friction

Terminal Velocity

In a falling object what is the term when the force of friction equals the force of gravity. *

Normal Force

Unbalanced Force

Terminal Velocity

Acceleration

Deceleration

Normal Force

Unbalanced Force

Terminal Velocity

Acceleration

Deceleration

Rolling Friction

In the picture below of the "after" cannon is fired, what type of friction does the cannon experience? *

Sliding Friction

Rolling Friction

Normal Friction

Fluid Friction

No Friction

Sliding Friction

Rolling Friction

Normal Friction

Fluid Friction

No Friction

Joules

Which is the unit of energy? *

Newtons

Watts

Joules

Kilogram meters per second

Newtons per second

Newtons

Watts

Joules

Kilogram meters per second

Newtons per second

Inertia

= Newton's First Law of Motion

= Newton's First Law of Motion

The resistance of an object to any change in motion. *

Newton's Second Law of Motion

Inertia

Newton

Joules

Newton's Third Law of Motion

Newton's Second Law of Motion

Inertia

Newton

Joules

Newton's Third Law of Motion

Motion

A change in position with respect to a reference point. *

Force

Work

Energy

Motion

Power

mass

Momentum

Weight

Force

Work

Energy

Motion

Power

mass

Momentum

Weight

Power

Watts is a unit of: *

Energy

Work

Power

Force

Distance

Momentum

Energy

Work

Power

Force

Distance

Momentum

Force = mass x acceleration

Momentum = mass x velocity

A force is required to change the momentum of any object. In a car crash, the car and the person have momentum. If the car hits a wall, the wall exerts a force on the car which stops its momentum. However, the wall does not exert a force on the person, so they keep going and are thrown forward.

Momentum = mass x velocity

A force is required to change the momentum of any object. In a car crash, the car and the person have momentum. If the car hits a wall, the wall exerts a force on the car which stops its momentum. However, the wall does not exert a force on the person, so they keep going and are thrown forward.

What is the difference between force and momentum?

Mass = how much material there is. Doesn't change in different gravity.

How many KG is the car? Ex. 2000 KG

Weight = how much force is there because of gravity.

How many Newtons is the car on earth? = 9.8 (gravity) x 2000KG = 19,600 Newtons

Velocity = How far it moves in a certain time. &

Speed in a particular direction

Formula: Velocity = Distance/Time

Units = Ex. 100 km/hour = 28 meters/second

Speed in a particular direction

Formula: Velocity = Distance/Time

Units = Ex. 100 km/hour = 28 meters/second

How fast is the car going?

Distance - change in position

Formula: D = V x T

Ex. 100 meters = 50 m/s x 2 seconds

Formula: D = V x T

Ex. 100 meters = 50 m/s x 2 seconds

How far does the car move?

Time

Formula: T = D/V

Ex. 2 seconds = 200m divided by 100m/s

Unit = seconds, minutes, hours

Formula: T = D/V

Ex. 2 seconds = 200m divided by 100m/s

Unit = seconds, minutes, hours

How long does it take to move the car 200m?

Momentum = the velocity of a mass

Formula: P = M x V

Units = KG x meter/second (kg m/s)

Note that the car's momentum is more than the driver's momentum because the car has more mass.

Formula: P = M x V

Units = KG x meter/second (kg m/s)

Note that the car's momentum is more than the driver's momentum because the car has more mass.

How fast is the 2000kg car moving? How about the driver?

Acceleration = change in velocity

Formula: Force/Mass (Because F = M x A)

Units: Meters per second per second (m/s^2)

Ex. 2m/s^2 = 4000N/2000kg

Formula: Force/Mass (Because F = M x A)

Units: Meters per second per second (m/s^2)

Ex. 2m/s^2 = 4000N/2000kg

How fast is the velocity changing? Ex. you hit the brakes and go from 100 KPH to 50 KPH in 3 seconds OR hitting the gas and going from 0 KPH to 100 KPH in 5 seconds.

Force = the thing that changes the acceleration

Formula: F = M x A

Unit: Newtons

Ex. 4000N = 2000kg x 2m/s^2

Formula: F = M x A

Unit: Newtons

Ex. 4000N = 2000kg x 2m/s^2

How much you need to accelerate the 2000kg car? Ex. Change the velocity from 0 m/s to 2 m/s.

Work = the distance you can move a mass in a certain time

Formula: Work = mass x distance (you move it)

Unit = joules

Ex. 10kg x 1000m

Formula: Work = mass x distance (you move it)

Unit = joules

Ex. 10kg x 1000m

How far can you move the 100kg wheelbarrow in 10 seconds?

Power = the rate at which the energy is used over time

Formula: Power = work/time

Unit = Watts

Formula: Power = work/time

Unit = Watts

How much do you need to move the 100kg wheelbarrow 100 meters in a 5 seconds?

Energy = what is transferred to get work done

= mass x gravity x height

Ex. 10kg x 9.8Newtons x 10meters = 980 kg m2 / s2

Unit = Joule

= mass x gravity x height

Ex. 10kg x 9.8Newtons x 10meters = 980 kg m2 / s2

Unit = Joule

What is stored in the rock that has been lifted up by a pulley?

Mass = How many KG is the car? Ex. 2000 KG

Weight = How many Newtons is the car on earth? = 9.8 x 2000 = 19,600 Newtons

Velocity = How fast is it going? Ex. 100 km/hour = 28 meters/second

Momentum = How fast is the mass moving?

The car's momentum is more than the driver's momentum because the car has more mass.

Acceleration = How fast is the velocity changing? Ex. you hit the brakes and go from 100 KPH to 50 KPH in 3 seconds OR hitting the gas and going from 0 KPH to 100 KPH in 5 seconds.

Force = How much you need to accelerate the mass to that speed? OR How much you need to slow down the mass?

Weight = How many Newtons is the car on earth? = 9.8 x 2000 = 19,600 Newtons

Velocity = How fast is it going? Ex. 100 km/hour = 28 meters/second

Momentum = How fast is the mass moving?

The car's momentum is more than the driver's momentum because the car has more mass.

Acceleration = How fast is the velocity changing? Ex. you hit the brakes and go from 100 KPH to 50 KPH in 3 seconds OR hitting the gas and going from 0 KPH to 100 KPH in 5 seconds.

Force = How much you need to accelerate the mass to that speed? OR How much you need to slow down the mass?

Talk about the picture of the car using these words:

Mass

Weight

Velocity

Momentum

Acceleration

Force

Mass

Weight

Velocity

Momentum

Acceleration

Force