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Definitions
Relative Velocity
Components
Projectiles
Problems
100

How you symbolize the change in height.

What is delta y?

100

A plane is traveling 300 m/s East and encounters a headwind of 107 m/s West. What is the plane's resulting speed?

What is 193 m/s?

100
This is the shape of the path of all projectiles.
What is parabolic?
100
What is the initial vertical velocity of a horizontal projectile?
What is 0?
100
If a tennis ball takes 4.5 sec to reach its peak, how long does it take to reach the other player?
What is 4.5 s?
200

How do you symbolize the range of a projectile?

What is delta x?

200

Sally is rowing down a river at 7 m/s North and encounters a current that is 10 m/s North. What is her resulting speed?

What is 17 m/s?

200
It doesn't change, this velocity stays the same.
What is horizontal velocity?
200
What is the acceleration of this type of projectile?
What is -10 m/s^2?
200
The initial horizontal velocity (vi in the x-direction) for a ball thrown horizontally off a cliff is 40 m/s. The ball stays in the air for 3 seconds. How far from the base of the cliff does it land?
What is 120 m?
300

This velocity is constant throughout the projectile's path.

What is horizontal velocity?

300
John walks North 8 m, West 1 m, and South 8 m. What is his resulting displacement?
What is 1 m W?
300
This is the only force that acts on a projectile.
What is gravity?
300
How does the initial speed of an object effect the time the object spends in the air and how far the object moves?
What is no effect on time, but will go farther?
300
A physics student who is curious about the trajectory of a paint ball stands with his gun horizontally and fires it off. The paint ball leaves the gun from a height of 3.5 m and lands on the ground 36.0 m away. How long was the ball in the air?
What is 0.85 s?
400

If a person is running at a rate of 5mph North, is this a vector or scalar quantity?

What is vector?

400
A bird boat is traveling 10 m/s East and encountered a current that is 3.5 m/s North. What is its resultant velocity?
What is 10.6 m/s?
400
This is the equation for vertical components.
What is delta y=0.5*a*t^2?
400
For a ball that’s shot at an angle, explain what happens to the vertical component of the initial velocity and of the acceleration throughout the flight.
What is velocity decreases then increases. Acceleration remains the same?
400
A physics student who is curious about the trajectory of a paint ball stands with his gun horizontally and fires it off. The paint ball leaves the gun from a height of .75 m and lands on the ground 3.0 m away. What was the horizontal velocity?
What is 7.7 m/s?
500

Displacement refers to how far out of place an object is and it is the object's overall change in position. Is displacement a vector or scalar quantity?

What is vector?

500
John walks in a straight line from point A to point B. Mary also walks from point A to point B, but her distance is 10 m more than Johns. True or false, May and John's displacement is the same?
What is true?
500
This is the equation for horizontal components.
What is delta x = vix*t?
500
A baseball is thrown horizontally off of a cliff with an initial velocity of 80 m/s. A bowling ball is dropped from the same cliff at the same time. Which hits the ground first?
What is both?
500
A rock is kicked horizontally off a building with an initial velocity of 40 m/s. The rock falls for 5 seconds. Determine the height of the building.
What is 123 m?