Show:
Velocity
Horizontal/Vertical component
Circular Motion
Projectile motion
Relative velocity
100
What is the vertical velocity at the peak of a projectile's trajectory?
What is ZERO!
100
The main factor affecting vertical velocity is ___________.
What is gravity
100
The equation for centripetal Force.
What is F=mass * centripetal acceleration?
100
If a tennis ball takes 4.5 sec to reach its peak, how long does it take to reach the other player?
9 seconds!
100
When a problem has multiple frames of reference, this is used to determine relative velocity.
What is vector addition?
200
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
200
True/False. The horizontal velocity is affected by gravity.
FALSE
200
This happens to velocity as the radius increases.
What is increases?
200
At what part of the projectile have minimum speed?
The top of the peak.
200
You would use this to add vectors that form a right angle.
What is Pythagorean theorem?
300
The horizontal and vertical components of a projectile's velocity are considered this.
What is independent of each other?
300
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?
What is the time the projectile was in the air
300
Uniform circular motion has an acceleration in this direction.
What is toward the center?
300
In what direction is all of the velocity at the top of a projectile's peak?
HORIZONTAL
300
In a bus moving 2.0 m/s you move to the front at a speed of 4.0 m/s relative to the bus. This is your speed relative to the street.
What is 6.0 m/s?
400
Initial horizontal velocity of a projectile is ____ its final horizontal velocity.
What is equal to?
400
For a receiver to catch a football at chest level, it must be aimed where in relation to his body.
What is above?
400
The velocity vector for an object in uniform circular motion is considered this in relation to the circle.
What is tangential to the circle?
400
At what other angle will a thrown ball go the same distance as one thrown 20 degrees?
70 degrees
400
The reason it takes longer to pass a car in the same direction over a car going the opposite direction.
What is the relative speed of the cars in the same direction is less than that of the two cars going opposite?
500
Double Jeopardy: Everyone gets a chance to answer. Those with correct response get the points. See handout.
1.4 seconds
500
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!
500
The acceleration of an object with a velocity of 11.5 m/s and a radius of 3.0 m.
What is 44 m/s2
500
Double Jeopardy: Everyone gets a chance to answer. Those with correct response get the points. See handout.
27 m
500
A plane flies at 200.0 km/hr relative to the air. This is the velocity relative to the ground if there is a 50 km tialwind.
What is 250.0 km/hr