Average speed
How do you calculate average speed?
Distance divided by time.
The entire length of an object’s path.
What does a horizontal line represent on a time-distance graph?
At rest
What is net force?
The overall force acting on the object after all the forces are combined.
A vehicle travels 4000 meters in 200 seconds. What is the speed?
20 m/s
What is the definition of displacement?
An object’s distance and direction from a reference point.
What does a curved line going upward represent on a time-distance graph?
Accelerates
Jenny is pushing a rock up a hill with a force of 85 N. If Chris comes to help and pushes with a force of 60 N, what is the net force on the rock?
145 N
Ronald runs 33 yards in 3.3 seconds. What is his speed?
10 yd/s
What is the definition of distance?
The measurement of how far away two points or objects are from each other.
What does a curved line going downward represent on a time-distance graph?
Decelerates
A customer is pushing a shopping cart with a force of 20 N to the left. Because the wheels are stuck, the friction caused by the ground is exerting a force of 8 N to the right. What is the net force and the direction it is going in?
12N to the left
What is the speed of a plane that travels 528 meters in 4 seconds?
132 m/s
What are Newtons?
The SI unit for force.
What type of time-distance graph is it if the slope of the line is going downward?
Returns to Start
Sally and Jeffery are pushing on a desk. If Sally pushes with a force of 65 N to the right, and Jeffery pushes with a force of 70 N to the right, What is the net force and direction it is going in?
135 N to the right.
A ball is thrown to a distance of 60 feet. What is the speed if it take 0.5 seconds to cover the distance?
120 ft/s
What is Newton's First Law of Motion?
An object at rest will stay at rest, and a object in motion will stay in motion unless acted upon an unbalanced force.
What type of time-distance graph is it if the slope of the line is going upward?
Constant Speed
There are 2 teams with 3 kids on each team playing tug of war. The first team are pulling with the forces 18N, 30N, and 20N. The second team are pulling with the forces 20N, 30N, and 29N. Calculate the net force and figure out which team will win.
The second team will win.