Describing position
The difference between speed and velocity.
Speed is the distance traveled per unit of time while velocity is the rate at which an object’s position changes.
The rate at which an object’s velocity changes.
What is acceleration?
TRUE OR FALSE:
Australia is larger than the moon.
True
The moon is 3400 km in diameter, while Australia’s diameter from east to west is almost 4000 km.
Any quantity that consists of magnitude.
What is a scalar?
What two factors affect momentum?
mass and velocity.
Skydiving is an example of what?
Free fall.
What are baby rabbits called?
Kits
What are the 4 most common vector quantities?
Displacement, velocity, acceleration, and force.
Under what conditions is momentum conserved?
Momentum is conserved when a system is isolated.
What do we call a curved path of a projectile?
A trajectory.
What letter does not appear in any american state name?
There's a Z in Arizona, and an X in Texas, but no Q in any of them.
Explain why we still use Newtonian mechanics for studying motion even though more-workable models are available.
Quantum mechanics and relativistic mechanics both make more accurate predictions that Newtonian mechanics.
How long will it take you to travel 647 m if you travel at 47.2 m/s?
13.7s
-105 or 105 kph.
Ketchup was once sold as medicine.
What is true?
Without a common frame of reference, it would be difficult to talk about positions and motions with people not in immediate area.
A boat is cruising north at 15 kph. Add the boat vector to the given tide vector of each of the following.
A. 5 kph North
b. 5 kph South
c. 5 kph east
A. 20 kph north
b. 10 kph south
c. 15.8 kph northeast
If a pitcher throws a football with a mass of 0.54 kg at 63.3 m/s west, what is the ball’s momentum?
What is 34.2?
How long is a jiffy?
1/100th of a second.