Newton's 2nd Law
Force
Random from Labs
Newton's 1st Law
Newton's 3rd Law
200
What is the equation related to this law?
F=MA
200
What is a force?
Push or pull
200
The unit of force named after its namesake.
What is a Newton?
200
The type of movement a mass has when the net force equals zero.
Constant speed
200
I jump down on the trampoline.
Name the reaction force.
Trampoline pushes back up on me.
400
A sled slides down a hill, reaches the level surface and eventually comes to a stop.
Which force causes the sled to come to a stop?
What is the Friction force?
400
When the net force on an object equals zero, how would you describe the forces?
Balanced
400
In the ruler flick lab, why was it so difficult (why did it take so long) to get the basketball to travel the full 2 meters?
It has a lot of mass and not a lot of force
400
You are bowling at a bowling alley. Give two examples of unbalanced forces.
When you release the ball, when it hits the pins, when it disappears to be sent back to you...
400
For every action there is an ______ and _______ reaction
What is Equal and Opposite?
600
What is an unbalanced force?
The cause for a mass to accelerate or change direction.
600
Name 3 specific forces.
Gravity, friction, air res, tension, normal, etc.
600
In the A6 lab, we added rubber bands and changed the mass in two different experiments to see how speed was affected. What was the result of the speed when increasing each?
More force = greater acceleration
More mass = less acceleration
600
Newton's 1st Law says what?
An object at rest will remain at rest and an object in motion will continue moving at a constant velocity unless acted upon by a net force
600
A canon ball is shot out of a canon. The canon and canon ball both move. Which will have a smaller acceleration?
Canon
800
Name two ways to accelerate an object and two ways to decelerate an object.
ACCELERATE - increase force, decrease mass
DECELERATE - increase mass, decrease force
800
The force which always acts in the direction opposite of motion.
What is friction?
800
On the downhill section of the B4, we witnessed a force act on the car (gravity). On the level section, we learned that the car had the same speed. What is the explanation for the car being at constant speed?
There are balanced forces...no net force...all cancel out
800
The velocities and masses of four objects are shown. Which object has the greatest inertia?
D
Because it is the object with the greatest mass
800
When drawing two things colliding or in contact, describe exactly how you would represent the action/reaction force pairs.
Equal in strength and opposite in direction!
<-- and -->
1000
The diagrams below depict the individual forces acting upon an object. Each arrow represents a force and the length of the arrow represents the size of the force. Based on this information, which objects could be moving to the right?
C or D
1000
The amount of force required to keep a 5-kg object moving to the right with a constant speed of 5 m/s?
0N !!!!!
If the speed is constant (Not changing) there is NO acceleration.
Forces cause accelerations (changes in motion) a force is not required to keep any horizontally moving object in motion.
1000
If you had to draw a model of the forces involved in the collision lab (when a car was launched and it hit the target car), describe what the model would look like.
*Arrows in opposite directions, drawn with the same length (to represent same strength/magnitude)
1000
Inertia describes what?
An objects resistance to a change in motion...more mass means more inertia
1000
According to Newton's 3rd Law, what happens if you let an untied balloon go?
Air will rush out of the balloon and cause it to move upwards in the opposite direction of the air movement.