Velocity
Any object that moves through the air or through space under the influence of gravity.
Projectile
The horizontal component is independent from____________________.
The vertical component
The main factor affecting vertical velocity is ___________.
GRAVITY
If a tennis ball takes 4.5 sec to reach its peak, how long does it take to reach the other player?
9 seconds!
Net Force
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 is 5.8 m/s
True/False. The horizontal velocity is affected by gravity.
FALSE
TRUE/FALSE. The vertical velocity is unaffected by the horizontal velocity.
TRUE
The two things that cause projectile motion
The downward force of gravity and an initial forward velocity
When an object is at rest, the net force is
Zero
What is the magnitude of velocity called?
What is SPEED
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.
The vertical component is independent of the _______________________.
Horizontal component
As a projectile rises and falls to the ground, the acceleration
Remains the same
Two forces likely acting on a bowl at rest on a table
Downward force from gravity, upward force from the table
What factor does vertical velocity depend on?
Gravity
How much will the horizontal velocity change in 19.6 seconds?
None at ALL
The acceleration due to gravity
9.81 m/s^2
If a question tells you to find the height of a cliff that a stone was thrown off of, what variable are you trying to find?
Yi
FIRST GROUP TO RAISE HAND DRAWS ON THE BOARD: Free body diagram of a pencil at rest on a table.
drawing should have: upward force from table, downward force from gravity
At the peak of a projectile's trajectory the 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 two velocity vectors are going in the exact same direction, how do you determine their resultant vector?
Add them
What FN stands force