Velocity
What is the vertical velocity at the peak of a projectile's trajectory?
Zero
The horizontal component is independent from____________________.
What is the vertical component
The main Force affecting vertical velocity is ___________.
The FORCE OF GRAVITY
If a tennis ball is launched across a tennis court and it takes 4.5 seconds to reach half-court, how long is the full motion of the projectile?
9 seconds!
How much time would it take for a pencil to fall 0.98 meters?
0.45 sec
If a ball is thrown straight up with a velocity of 5.8 m/s, what will its velocity be as it approaches the ground? What will the velocity be at the top?
-5.8 m/s coming down and 0m/s at the top
True/False. The horizontal velocity is affected by gravity.
FALSE
TRUE/FALSE. The vertical velocity is unaffected by the horizontal velocity.
TRUE
When in the trajectory does projectile have minimum speed?
The top of the peak.
A monkey horizontally throws a banana off 15 m tall tree. The banana fell 8 m away from the tree. What was the horizontal velocity of the banana?
4.6 m/s
What is the vertical velocity when an object is launched horizontally?
0m/s
If Jane can jump her unicycle 0.34 meters off her driveway from rest, how would riding down the driveway instead of starting from rest affect the height of her jump?
Not at all, her vertical is independent of her horizontal.
The vertical component is independent of the _______________________.
the horizontal component
In what direction (Horizontal or vertical) is the velocity at the top of a projectile's peak?
HORIZONTAL
A ball is shot horizontally at a bucket from a table with a height of 25 m. The initial velocity is 4.5 m/s. What is the horizontal distance of the ball?
What is 10.2 m
Acceleration of gravity is equal to _______.
9.8 meters per second squared
How much will the horizontal velocity of a projectile change in 19.6 seconds?
None at ALL; it remains constant
Does the vertical Velcoity change over time while a projectile is in motion?
Yes
What is the vertical velocity at the top of any projectile's path?
0 m/s
A football is thrown straight up with a speed of 15 m/s. How long is the ball in the air?
1.5 Sec
At the top of a projectile's trajectory, is there a horizontal velocity?
Yes and vertical velocity is zero
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 the ground at the same time!
For an upwardly launched projectile, _______ is the best angle to shoot a projectile the furthest distance.
45 degrees
If a plane flying at a constant speed drops cargo, how does the cargo fall relative to the plane?
Right under it
A basketball player shoots a basketball with a speed of 10 m/s. The player shoots the ball at an angle of 40 degrees. How far does the ball travel horizontally if she shoots an air ball?
10 m