What's Our Vector, Victor?
What are the 2 parts of a vector?
Magnitude and Direction
The acceleration due to gravity is known as g and is equal to
-9.8 m/s/s or -10 m/s/s
What is the average speed of a runner who travels 4 km in 30 min? (km/hr)
8 km/hr
This angle will produce the largest distance downrange for a projectile fired at a given speed.
45 degrees
This 'planet' is technically now a 'dwarf planet' because we have discovered more major celestial objects at the same distance from the Sun.
Pluto
This famous Theorem is how horizontal and vertical components of a vector are combined to find an overall vector.
The Pythagorean Theorem
What is the definition of acceleration?
A change in velocity over time
What is the instantaneous speed of an object that has fallen freely from rest for 5 seconds? (m/s)
50 m/s
DAILY DOUBLE
Select another question for ONLY your team to answer for 2x as many points as usual.
This planet's largest moon, Triton, is named after the Greek god who is the son of the figure this planet is named after.
Neptune
Describe a situation in which an object's velocity and acceleration vectors are in the same direction
An object in freefall, a driver with their foot on the gas
A rock dropped from a 5-m height accelerates at -10 m/s/s and strikes the ground 1s later. If the rock is dropped from a height of 2.5 m, its acceleration during falling is
STILL -10 m/s/s
What distance has an object traveled if it has fallen freely from rest for 6 s? (m)
180 m
A ball is thrown into the air at some angle. At the top of the projectile's path its velocity is in what direction?
Horizontal
This planet has the largest set of rings on it in the Solar System, after Saturn.
Uranus
What is the initial velocity of a ball thrown with a horizontal component of 13 m/s and a vertical velocity of 7 m/s?
14.76 m/s
Which has a larger acceleration: a car increasing its speed from 50 to 60 km/hr or a cyclist that increases its speed from 5 to 15 km/hr in the same time frame?
Neither! They are the same
A boat is rowed at 3 km/hr across a river that is flowing at 4 km/hr, what is the total speed of the boat relative to the shore? (km/hr)
5 km/hr
A ball is thrown horizontally at the exact moment that an identical ball is dropped from rest. Which hits the ground first?
Neither, they hit the ground simultaneously.
This planet is believed to have once been like Earth - lush green vegetation, water vapor and oxygen atmosphere, until a runaway greenhouse gas effect from excessive methane cooked it alive. Not pretty.
Venus
What is the vertical component of the velocity of a ball launched with v = 15m/s @ 30 degrees above horizontal?
7.5m/s
DAILY DOUBLE
Select another question for ONLY your team to answer for 2x as many points as usual.
Find the speed required for a ball to be thrown straight upwards and return exactly 6 seconds later.
30 m/s
A thief, fleeing the police along a rooftop, attempts to jump from one building to the next. The next roof is 1.5m down, and 4m away. The thief jumps with v = 2m/s @ 45 above horizontal. Does the thief make it? Do the police call for backup or a body bag?
Backup - he makes it
As the planets revolve around the Sun at different speeds, the planet that is the closest to the Earth in space changes over time. Which planet spends the most time being the closest to the Earth, in a given Earth year?
Mercury