Show:
Linear/Proj. Motion
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Momentum
100
Speed has no direction, velocity has direction
Why is speed classified as a scalar quantity and velocity as a vector quantity?
100
An object at... tends to.... an object in... tends to stay....
What is at rest and in motion?
100
This is equal to the net force divided by the mass
What is acceleration?
100
For every..., there is an.... (Newton's 3rd Law)
What is action, equal and opposite reaction?
100
Inertia, Inertia in motion
What is mass, momentum?
200
The projectile would be called a satellite.
What do we call a projectile that continually "falls" around the earth?
200
Friction
What is the force that acts between materials that touch as they move past each other?
200
An object accelerates when this acts on it.
What is net force?
200
Action and reaction forces are ... in strength and ... in direction
What is equal and opposite?
200
Since no net force is exerted on the system, this remains unchanged.
What is the law of conservation of momentum?
300
The diagonal represents the resultant
When a rectangle is constructed in order to add velocities, what represents the resultant?
300
Mass is... Weight is...
What is the quantity of matter in an object? Waht is the force of gravity on an object?
300
When the air resistance on the object equals the weight of the object, then the object has
What is terminal speed?
300
You can't hit a tennis ball in midair with a force of 200N because...
What is because it can't hit you with 200N of force?
300
Change in momentum, force x time
What is impulse?
400
Seconds are entered for speed change, and again for time change
Why is the unit of time entered twice in the unit of acceleration?
400
The weight of 2 kilograms of yogurt
What is 196 N (or 20N rounded)?
400
This would cause the acceleration of a cart to decrease by half
What is doubling the mass?
400
You walk faster on a carpeted floor because the carpet exerts...
What is greater reaction force?
400
In space, a velcro ball moving at 6 m/s hits and sticks to another velcro ball of equal mass at rest. Their speed afterwards is....
What is double the mass moves at half the speed, 3 m/s?
500
9.8 m/s
What is the constant acceleration of an object in freefall?
500
If there is no friction, a ball won't change speed/acceleration when rolled in this direction.
What is horizontal?
500
A 2-kg rock will not fall twice as fast as a 1-kg rock.
What is because the twice the force is acting on twice the mass?
500
If two 50N weights are suspended from a table, the spring scale between them reads....
What is 50 N? (just like they were being pulled in opposite directions)
500
The time of impact in a car crash is extended by four times, so the force of impact changes....
What is by dividing by four?