Newton’s Notions

A car begins at the start line traveling at a speed of 20 feet/second for 3 seconds. Then it goes 30 ft./sec. for the next 2 ½ seconds. Next, its speed changes to 25 ft./sec. for 4 seconds. And then it goes 40 ft./sec. for 3 ½ seconds to the finish line. TASK #1: Make a table of the travel data and show how far the car should travel during each second of the journey. TASK #2: Make a line graph to show the distance traveled by the car during each second of its journey. Consider this.

Key Questions: Answer these in order. How far did the car travel during the first 3 seconds? How far did the car travel during the next 2 ½ seconds? How far did the car travel during the next 4 seconds? How far did the car travel during the last 3 ½ seconds? What was the total distance that the car traveled? What was the total length of time that the car traveled? What was the average speed for the car during the trip? What does the steepness of the different parts of the line graph mean?

TASK #1: Measure how long it takes a ball to roll 3 meters when released at the 100-cm. mark on the ramp. TASK #2: Measure how long it takes a ball to roll from the 3-meter mark to the 6-meter mark when it is release at the 100-cm. mark on the ramp. TASK #3: Measure how long it takes a ball to roll 3 meters when released at the 50-cm. mark on the ramp. TASK #4: Measure how long it takes a ball to roll from the 3-meter mark to the 6-meter mark when it is release at the 50-cm. mark on the ramp.

Time Period* Total Time for this Period Distance from the Starting Point Average Speed (From start to now) 15 seconds25 meters 25 seconds75 meters 35 seconds175 meters 45 seconds280 meters 55 seconds350 meters 6*10 seconds420 meters 710 seconds480 meters 810 seconds500 meters 910 seconds500 meters 1010 seconds500 meters Distance that the Car Has Traveled at Different Times

Distance from Home

1. Look at the drawing to the right. Explain any forces that must be in the drawing. Tell whether the forces are balanced or unbalanced. 2. If the paper were pulled to the left slowly, tell what would happen and why. Tell if there are any balanced and unbalanced forces.

Ball “A” is moving and Ball “B” is sitting still. Use your pencil to draw the motion of Ball “B” after the collision. B A

Ball “X” is moving and Ball “Y” is sitting still. Use your pencil to draw the motion of Ball “Y” after the collision. Y X

The arrows below show two forces acting on a wagon at the same time. The amount of each force is shown next to each arrow. Describe the resulting motion of the wagon. __________________________________ How would you describe these forces? ______________________________________ 35 N.70 N.

Pulleys Draw a pulley system that that two pulleys. One of the pulleys has three wheels and the other one has two wheels. Show the pulley system lifting a box that is 100 pounds. How hard should you have to pull to lift the 100- pound box? ________________

This inclined plane is 4’ high and 16’ long. If the 100-lb. box has wheels, about how much force does it take to roll it up the plane?

Simple Machine Type?