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Science Force and Motion Choice1 Choice 2 Choice 3 Choice 4 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500 Velocity When you know the speed and direction of an object’s motion, you know it’s _____? Row 1, Col 1 Time The formula for speed is: Speed = distance/_____? 1,2 Average Speed Dividing the total distance traveled by the total time gives you the ____________? (You drive 100 miles in 2 hours) 1,3 Acceleration The rate at which velocity changes is ___________? 1,4 4 m/s squared A roller coaster accelerates from a speed of 3 m/s to 23 m/s in 5 seconds. (Final speed – initial speed / time) 2,2 Deceleration When a motorcycle slows down, it is called ______________? 2,3 Acceleration __? = Final Speed-Initial Speed _________________ Time 2,4 10 m/s squared An airplane touches down at 60 m/s and decelerates to 30 m/s in 3 seconds. (final speed – initial speed / time) 3,1 42.8 m/h The distance from California to Chicago is 2,140 miles. It took 50 Hours. What was the average speed? (speed=distance/time) 3,2 3 m/h You ride your skate board for 6 miles and it takes you 2 hours. What is your average speed? (Speed=distance/time) 3,3 20 km/h northwest What is the velocity of a hurricane that covers 80 km in 4 hours and is traveling northwest? (velocity=distance/time) 3,4 50 km/h east What is the velocity of a tornado that covers 150 km in 3 hours and is traveling east? (velocity=distance/time) 4,1 40 km/h You take the train and travel 1,200 km in 30 hours. What is Your average speed? (Speed=distance/time? 4,2 add Do you add or subtract forces when two people are pushing a chair in the same direction ? 4,3 Add 55N Do you add or subtract to find the net force in the example? 30N 25 N 4,4 Subtract 10N Do you add or subtract to find the net force in the example? 15N 5N 5,1 friction When two objects rub Against each other they create ___________? 5,2 Acceleration Speeding up, slowing down, or changing direction is _____? 5,3 Weight The measure of the force of gravity on an object is called ________? 5,4