The direction and length of a straight line from the starting point to the ending point of an object's motion is called?
Displacement
100
The property of matter that works against motion is?
friction
100
The path of motion of a thrown javelin is known as
projectile motion
100
On what principle are hydraulic systems based?
pascal's principle
100
Explain how speed and velocity are different.
Speed tells how fast an object is going, velocity does the same but includes a direction.
200
Displacement vectors of 5km North, 3km East, 2km South, and 3km West combine to a total displacement of?
3 km North
200
The forces on a falling leaf are?
gravity and air resistance
200
The property of matter that resists a change in motion
intertia
200
As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom of the beaker does what?
Increases
200
The equation for acceleration is:
a = (VF - VI) / t
Please state what each variable stands for
a = acceleration
VF = Final Velocity
VI = Initial Velocity
t = time
300
Two or more velocities add by ____________ ___________
Vector addtion
300
Th acceleration due to gravity on Mars is about 1/3 the acceleration due to gravity on the Earth's surface. The weight of the space probe on the surface of Mars is about?
1/3 its weight
300
When an object accelerates, it depends on two factors they are ___________ & __________
force and mass
300
The pressure exerted by a fluid at any given depth is _____________ exerted in all directions
equally
300
Name all the ways that describe how an object accelerates
speeding up, slowing down, change directions
400
Speed that is measured at a particular instant is known as?
Instantaneous Speed
400
The universal force that is effective over the longest distance is
gravitational
400
For every action there is an equal and opposite reaction is known as which of Newton's Laws of Motion?
Third law
400
The buoyant force on an object is equal to the weight of the?
fluid displaced by the object
400
If a ball is traveling at a constant speed inside a circular structure, is the ball accelerating? Explain
Yes, it is changing direction
500
A car that increases its speed from 20km/h to 100 km/h undergoes _____________ acceleration.
positive
500
The center-directed force that acts on a satellite in orbit is called
Centripetal force
500
A 38-kilogram canoe broke free of its dock and is now floating downriver at a speed of 2.2 m/s. What is the canoe's momentum?
83.6 kg x m/s
500
As altitude increases, what happens to the air pressure?
It decreases
500
In a spray bottle is the pressure greater in the area outside of the bottle or inside of the bottle?