Observing Motion
3 ways of measuring motion
What is distance, time, and speed?
SI unit for speed
m/s
SI unit for velocity
What is m/s?
SI unit for acceleration
What is m/s2?
Forces are balanced when
What is net force = 0?
_____________ measures the path taken
What is distance?
An object's change in position relative to a reference point
What is motion?
Equation for speed
What is v=d/t?
Equation for velocity
What is v=d/t?
Equation for acceleration
What is a=change in velocity / time?
Tell me an example of friction
What is rubbing hands together, car tires on a road, sliding feet on floor, etc.?
The speed of an object that moved 12 m in 4 s? (time given: 45 seconds)
What is 3 m/s?
Difference between speed and velocity
What is velocity includes direction?
Distance traveled divided by time the motion occurred ( = d/t)
What is speed?
Speed of an object in a particular direction
What is velocity?
When an object accelerates, what changes?
What is velocity? **Will accept speed &/or direction
Force that always opposes motion
What is friction?
What is the average speed of an object if at 2 seconds it traveled 7 m and at 8 seconds it traveled was 40 m? (time given: 60 seconds)
What is 5.5 m/s?
Change in position of an object (including direction)
What is displacement?
Slope of distance vs time graph equals this
What is speed?
Slope of a distance vs time graph and direction equals this
What is velocity?
Slope of speed vs time graph equals this
What is acceleration?
Gravity, electromagnetic, nuclear are these
What is 3 fundamental forces of nature?
A fish swims 4 m in 10 s then accelerates to swimming 48 m in 12 s. What is the fish's acceleration? (time given: 60 seconds)
What is 1.8 m/s2
True or False: displacement does not have to include direction
What is True?
Calculate the speed of an object moving 34 m in 17 s
What is 2 m/s?
Calculate the velocity of a ball thrown 60 m north in 12 s
What is 5 m/s north?
A marble is rolling at 0.8 m/s then accelerates in 6 seconds to 1.3 m/s. What is acceleration? (time given: 30 seconds)
What is 0.08 m/s2? **Will accept 0.1 or 0.083
Sliding friction is greater/less than rolling friction
What is greater than?
How long does it take a toucan to fly 300 m at a velocity of 20 m/s south?
What is 6,000 s?
A system for specifying the precise location of objects in space and time
What is frame of reference? **Will accept reference point
How long does it take an ant to crawl upwards 2.5 m if its velocity is 0.02 m/s?
What is 125 s?
How far is a stick thrown in 15 seconds if its speed is 9.7 m/s? (time given: 45 seconds)
What is 145 m?
A horse is running, calculate the acceleration between these two points: 1) 5 seconds, 20 m and 2) 13 seconds, 46 m. (time given: 75 seconds)
What is 0.19 m/s2?
Kinetic friction is always greater/less than static friction
What is Less than?
A mouse is running at 0.8 m/s for 6 seconds then stops. What is the mouse's acceleration? (time given: 75 seconds)
What is -0.13 m/s2?