Vocabulary
Free Fall
What is an isolated space where gravity is the only force acting on an object?
Acceleration is always...
What is zero?
At what angle is the range the highest?
What is 45 degrees?
An object in freefall has what forces applied to it
What is Gravity?
The launch angle of a projectile can affect what?
What is distance, height, and time.
Projectile
What is an object launched by an initial force, and the force of gravity is only experienced?
This happens to the velocity in the y-component
What is decrease?
What shape does the trajectory follow
What is a parabola?
A boy that sucks at sports throws a ball straight up in the air with an initial speed of 5 m/s. How fast is the ball going to fall on the way down?
Mass impacts how an object falls
True or False?
What is False?
Horizontally Launched Projectile
What is a projectile launched horizontally where the x-component is constant, and the y-component accelerates downward?
A horizontally launched projectile only moves under the influence of its own...
What is weight?
Vertical acceleration is...
What is -9.8 m/s2?
A rock rolls off the top of a crane that is 70 m high. The rock's speed when it hits the ground is 12 m/s. How long does the construction worker at the bottom have to realize that he has to move out of the way before it hits him?
What is 1.2 s?
How do the times differ on the way up and on the way down (launched at an angle)?
What is the times are the same?
Trajectory and Range
What is the angle/arc that the projectile will follow when being launched, and the distance that it will land at?
This happens to the velocity in the x-component
What is stays constant?
Horizontal acceleration is...
What is not present?
Elon Musk's rocket lifts off with a velocity of 200m/s. If the rocket went straight up and straight back down, how long would it take to crash back down at the ground?
What is 40.8 s?
How can you solve for time when information hasn't been given in a problem? (Say the formula for bonus points.)
What is speed, acceleration, height, and distance. (vf2=vi2+2ax or vf2=vi2+2ay)
Parabola
What is the shape of an object's trajectory, differed by the velocity and angle an object is launched at? (half parabola.)
The shape an object's trajectory follows when launched at a horizontal angle
What is a half parabola?
The range of complementary angles are...
What is the same?
A dumb kid throws a rock down at a duck under a bridge that is 98 m high with an initial speed of 5 m/s. How fast is the rock traveling when it hits the duck's face below?
What is 44.1 m/s