Velocity
What is the path of a projectile
a parabola
The horizontal component is independent from____________________.
What is the vertical component
What is the acceleration?
-9.8m/s2
If a tennis ball takes 4.5 sec to reach its peak, how long does it take to reach the other player?
What is 9 seconds!
What would the velocity in the y direction be after falling for 1s from rest?
What is -9.8 m/s?
If a ball is thrown straight up from the ground with a velocity of 5.8 m/s, what will its velocity be as it approaches the ground?
What is -5.8 m/s
True/False. The horizontal velocity is affected by gravity.
What is FALSE
TRUE/FALSE. The vertical velocity is unaffected by the horizontal velocity.
What is TRUE
At what part of the projectile have minimum speed?
What is The top of the peak.
What determines time in the air
What is how high in the air it gets
where is the vertical velocity a maximum
What is at the end or start of the projectile?
If you were to throw a rock 4.3 m/s, horizontally, and drop another from the same height, which would hit the ground first?
Neither, they would hit at the same time
If it takes 8 seconds to hit the ground after being launched, how long does it take to reach the peak?
What is 4s
Where does the ball land if it is shot directly up from a constantly moving car and why?
What is directly on the car since the horizontal velocity does not change
T/F The displacement in y is from the highest point to the ground
False
What factor does vertical velocity depend on?
Gravity
How much will the horizontal velocity change in 19.6 seconds?
What is None at ALL
Vertical velocity can be determined by multiplying the acceleration due to gravity by ________________.
What is the time the projectile was in the air
Why should the monkey hold onto the tree to avoid being shot?
What is because gravity affects the monkey and the bullet in the same way
If a ball was tossed upward and it reached its highest point, describe its velocity as it falls back down.
What is It INCREASES in magnitude (or decreases in value)
At the peak of a projectile's trajectory the velocity is both horizontal and vertical, vertical only or horizontal only?
Horizontal ONLY
If Jane can jump her unicycle 0.34 meters off her driveway from rest, how would riding down the driveway(moving) and jumping affect her height?
Not at all, her vertical is independent of her horizontal.
For an upwardly launched projectile, _______ is the best angle to shoot a projectile the furthest distance.
What is 45 degrees
A rock is dropped at the same elevation that a ball is thrown horizontally. Which will have the greater velocity when it reaches the ground?
What is they will have the same velocity
EXPLAIN where AND how a package dropped from a plane lands with respect to the moving plane.
What is The package ends up UNDER the moving plane, since its horizontal velocity remains constant.