Show:
Forces and Motion 1
Forces and Motion 2
Forces and Motion 3
Forces and Motion 4
Forces and Motion 5
Forces of Motion
SCENARIOS
100
This happens to an object when it has positive acceleration.
What is speeding up?
100
A push or a pull exerted on an object is called this.
What is Force?
100

An apple is falling from a tree. The apple´s speed increases as it falls. How does the apple´s motion affect it´s mechanical energy AND kinetic energy?

Mechanical energy remains the same and its kinetic energy increases. 

100

A baseball thrown into the air will continue on its path until which force acts upon it. 

A: Friction

B: Gravity

C: Inertia 

D. Mass

100

Who discovered the Laws of motion?

SIR Isaac Newton

100

Energy can be destroyed

TRUE or FALSE

FALSE

100

Holiday and JB Marley push my cart with the same amount of force.

What Kind of force is this?

BALANCED

200
This is happening to an object when it has negative acceleration.
What is slowing down?
200
The force of gravity acts on an object that has this.
What is Mass?
200
This is the speed of an object in a specific direction.
What is Velocity?
200
A change in the gravitational force acting on an object is its this.
What is Weight?
200

When mass increases, speed

decreases

200

DOUBLE POINTS

STATE THE 1st LAW of MOTION - give an example

An object at rest remains at rest. An object in motion goes at constant speed until an outside force acts upon it.


Back pack on ground - ball on ground - kicked

200
Braden Gaither sets a screen on Blaze.

Blaze doesn't see him. He runs fulls speed into Bradan.

What happens to Blaze and why?

Blaze will fly in the opposite direction- because the lighter the mass the greater acceleration 

300

In absence of acceleration, a moving object has a constant this.

What is velocity?

300

Newton's First Law of Motion is also called

What is "Law of Inertia"

300

What is the formula for calculating speed?

Speed = Distance / Time

300
The force that pull a falling leaf towards earth is called this.
What is Gravity?
300

What do simple machines do?

Help change direction or amount of force needed to move an object

300

What is the 2nd law of motion?


DOUBLE POINTS - GIVE AN EXAMPLE

FORCE=MASS X ACCELERATION


Punting a football

300

I kicked the desk with my foot - what happens and which law does that represent! 

It will hurt because of the 3rd law - The wall will push back against my foot. In an equal and opposite reaction

400

A toy cr is released at the top of an INCLINED PLANE. How does it´s energy change as it rolls down?

It´s Kinetic Energy Increases, and it's potential energy decreases.

400

The tendency of an object to resist a change in its motion is known as this.

What is Inertia?

400

Energy moves from one object to another

energy transfer

400
The force that is applied to an object by a person is called this.
What is Applied force?
400

What is Energy?

The ability to do work

400

What is the 3rd LAW of Motion?


DOUBLE POINTS - GIVE AN EXAMPLE

For every action there is an equal an opposite reaction! 


2 objects collide -- both will react to the other 
400

A roller coaster at the bottom of a big hill has what kind of energy

KINETIC

500
Moving parts in machinery are coated in oil and grease to reduce this.
What is Friction?
500

A rock setting on the edge of a cliff has what kind of energy?

Potential

500
The rate of change in the velocity of an object is called this.
What is Acceleration?
500

Energy changes form within a system

energy transformation

500

A ball rolls on a carpet. The ball experience friction as it rolls. How will friction affect the ball´s motion?

A. The ball experiences an unbalanced force and will speed up.

B. The ball experiences an unbalanced force and will slow down

500

Because of the 3rd law of motion... Which would fly further - Kwali? or JB? of they ran into each other?

EXPLAIN WHY?

JB - Because the smaller the mass - the greater the acceleration

500

Why would the football need to be kicked harder in the cold when a football player is attempting an extra kick?

The cold air reduces the air pressure in the ball!