Get a Move On
An object’s change in position compared to a reference point
What is motion?
Force that opposes motion for two objects that are in contact
What is friction?
Biff’s hovercraft glides down a 38 m track in 13.0 seconds. Calculate his speed.
s = d/t
s = 38m/13.0s
s = 2.923m/s
What is s = 2.9 m/s ?
An action exerted on a body to change the body’s state of rest or motion
What is force?
Formula for speed
What is distance/time?
Unit for this measurement
3.5 m
What is distance?
System for specifying object’s location in space and time
What is a frame of reference?
Two large classifications (types) of friction
What are static and kinetic friction?
Paul chased a bunny out of his mom’s garden. The bunny moved at a speed of 1.5 m/s Calculate the distance the bunny ran if Paul chased it for 45 s.
d = s x t
d = 1.5 m/s x 45s
d = 67.5 m
What is 68 m?
DAILY DOUBLE!!!!!!!
Two types of forces (large classifications)
What are field and contact forces?
Name a unit for speed
What is m/s, mph, km/hr, ft/s?
Unit for this measurement
9 hrs
What is time?
To measure this, you measure the length of the path the object took
What is distance?
An example of static friction
What are any two objects touching and NOT moving? (Answers will vary)
A family decided to take a road trip from Illinois to Colorado, covering 1648 mi. If they travel an average of 67.5 mph, calculate the duration of their trip.
t = d/s
t = 1648 mi/67.5 mph
t = 24.4148 hrs
What is t = 24.4 hours?
Examples of two types of contact forces
What are pushes and pulls?
Speed of a object in a particular direction
What is velocity?
Unit for this measurement
- 7.5 m/s2
What is acceleration?
Change in position of an object
What is displacement?
An example of rolling friction
What are any two objects where at least one is rolling over the other? (Answers may vary)
If a cruise ship was en route to Mexico from New Orleans at 23 mph and Samir walked to the rear of the ship at 4mph, calculate Samir’s resultant velocity.
What is 23mph south - 4mph north = 19mph south?
Two examples of field forces
What are magnetism and gravity?
Can be calculated using slope of a distance/time graph
What is speed?
Unit for this measurement
6.4 mph
What is speed?
Describe at least three ways to describe direction of motion
What are north, south, east, west, up, down, toward, away from, angular movement?
An example of sliding friction
What are any two objects touching and at least one is sliding over the other? (Answers will vary)
If a cheetah can move at 70.0 mph, calculate how far can it travel in 15 minutes.
15 min = .25 hour
d = s x t
d = 70.0 mph x .25 hr
d = 17.5 mi
What are 18 miles?
Four fundamental forces
What are gravity, electromagnetism, strong nuclear and weak nuclear forces?
The formula for calculating velocity
What is distance/time?
Unit for this measurement
2.14 m/s west
What is velocity?