Vectors
a hiker walks 8m East and 6m North, what's her total displacement?
14m
What shape does a projectile follow under the influence of gravity?
Parabola
An object travels at 8 meters per second for 24 meters. How long did it take for the object to complete the distance?
3 seconds
When an object is said to be in free fall, the only force acting on the object is what?
gravity
A vector is a quantity that has both ...
magnitude and direction
What is the acceleration in the horizontal direction in a given kinematic equation?
0 m/s2
An object travels at 20 meters per second for 0.5 seconds. How many meters did the object travel?
10 meters
A 1kg rock and a 10kg small boulder are dropped from a moving truck at the same time. Which will hit the ground first?
what is the pythagorean theorem
a^2 + b^2 = c^2
What is the acceleration in the vertical direction in a given kinematic equation?
-9.81 m/s2
What is muzzle velocity a measure of?
The speed of the projectile the moment it leaves the barrel.
What does the slope of a velocity-time graph represent?
acceleration
what is component of a vector?
the projection of a vector along axes of a coordinate system
A ball is given initial horizontal velocity. Another ball is dropped. Which ball falls at a faster rate?
They fell at the same rate.
What is the velocity of a plane that traveled 3000 miles from New York to Los Angeles in 5.0hrs?
6000 mi/hour
What is terminal velocity?
the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
What graphical method is used?
Linear scale
What is the angle that gives you the biggest range for any given speed?
45 degrees
A vehicle travels 2345 m in 315 s toward the evening sun. What is its average velocity?
7.44 m/s W
What describes the forces that are in balance when an object reaches its terminal speed?
Weight and air resistance.