Template by Bill Arcuri, WCSD Who Wants to Be a Millionaire?

One Dimensional Motion Click the appropriate dollar amount at right to proceed to the question

Template by Bill Arcuri, WCSD Phone A Friend “OK Contestant…Please select a friend to help you with this one. You have thirty seconds to discuss your options…” Return to the Question

Template by Bill Arcuri, WCSD Ask the Audience “Audience, we need your help on this one…in a moment, we’ll ask you to indicate, by show of hands, your choice for the correct answer…” Return to the Question

Template by Bill Arcuri, WCSD Fifty - Fifty You’ve asked that two of the wrong answers be eliminated, leaving you with one wrong answer plus the correct one. 50/50 Return to the Question

Template by Bill Arcuri, WCSD Correct Correct! Proceed to Next Question

Template by Bill Arcuri, WCSD Incorrect Sorry, That’s Incorrect Return to the Question

Template by Bill Arcuri, WCSD km/hr Correct units for velocity are … mm/s 2 km 50/50 A CD B

Template by Bill Arcuri, WCSD Same as distance traveled Displacement is … Always positive Change in position A feeling of being displaced A CD B 50/50

Template by Bill Arcuri, WCSD A feeling of motion Velocity is … Slope of position VS time graph What happens on a roller coaster Same as speed A CD B 50/50

Template by Bill Arcuri, WCSD Object is moving backward A negative displacement indicates … Object has moved in negative direction Object is moving forward Object has moved backward A CD B 50/50

Template by Bill Arcuri, WCSD Displacement is negative A negative velocity indicates … Object is moving backward You made an error Object is moving in negative direction A CD B 50/50

Template by Bill Arcuri, WCSD In same direction If object is slowing down, the velocity and acceleration are … In opposite directions, but at the same rate In opposite directions Too complicated to understand A CD B 50/50

Template by Bill Arcuri, WCSD 2.4 km/hr southward Two students take a walk southward along a straight road. They walk 200 m in 85 s. Their velocity is … 2.4 m/s southward 0.42 m/s southward 17,000 m A CD B 50/50

Template by Bill Arcuri, WCSD depends on how far he ran If a football player is tackled such that he returns to his starting position, his displacement … cannot be determined Is negative is zero A CD B 50/50

Template by Bill Arcuri, WCSD v f 2 = v i 2 + 2ax Which is not an equation of motion? x = v i t + 1/2at 2 v f 2 = v i 2 + 1/2at v f = v i + at A CD B 50/50

Template by Bill Arcuri, WCSD v f = v i + at A plane starting at rest undergoes a constant acceleration of 4.8 m/s 2 for 15 s before takeoff. Which equation would you use to find the velocity at takeoff? v avg = 1/2(v f + v i )x = v i t + 1/2at 2 v f 2 = v i 2 + 2ax A CD B 50/50

Template by Bill Arcuri, WCSD  9.8 m/s A baseball player hit a ball straight up. When it returned to its original height, it was traveling at  60 m/s. Ignoring air resistance, how fast was it traveling when it left the bat? 0 m/s30 m/s 60 m/s A CD B 50/50

Template by Bill Arcuri, WCSD 0 m/s s A baseball player hit a ball straight up. What was the ball’s acceleration at the top of its path? Depends on the air resistance  9.8 m/s 2 Depends on its initial velocity A CD B 50/50

Template by Bill Arcuri, WCSD v f 2 = v i 2 + 2ax A speedboat increases its speed from 25 m/s to 35 m/s in a distance of 250 m. Which equation would you use to find the boat’s acceleration? v f = v i + at Need more than one equation x = v i t + 1/2at 2 A CD B 50/50

Template by Bill Arcuri, WCSD x = v i t + 1/2at 2 A bus slows down uniformly from 75 km/hr to 0 km/hr in 220 m. Which equation would you use to find how long it takes the bus to stop? v f 2 = v i 2 + 2axv f = v i + at Need more than one equation A CD B 50/50

Template by Bill Arcuri, WCSD positive The velocity at time t 2 is … negative moving backward zero A CD B 50/50