Copyright © 2010 Pearson Education, Inc. Accelerated Motion Chapter 3 Review

Select Your Team A. Terrible Toms B. DJ Jazzy Jay and the Funky Bunch C. Devilish Demetrius D. Pathetic Patrick E. Joyful Joes

Acceleration describes the rate of change in __________. A. Position B. Velocity C. Mass D. Gravity

When velocity is positive and acceleration is negative, the object will __________. A. Slow down B. Speed up C. Travel with the same velocity D. Stop momentarily and then keep moving

Ignoring air resistance, an object falling toward the surface of the earth has a velocity that is A. Constant B. Increasing C. Decreasing D. Depends on the mass of the object

Ignoring air resistance, an object falling near the surface of the earth has an acceleration that is A. Constant B. Increasing C. Decreasing D. Depends on the mass of the object

A cannonball is fired straight up at 50 m/s. Neglecting air resistance, when it returns to its starting point its speed A. Is 50 m/s B. Is more than 50 m/s C. Is less than 50 m/s D. Depends on its time in the air

Team Scores PointsTeamPointsTeam 4.6Devilish Demetrius 4.4Joyful Joes 4.4Pathetic Patrick 3.2DJ Jazzy Jay and the Terrible Toms

A car starts from rest at 4.0 m/s 2. How long will it take for the car to reach a speed of 28 m/s? A. 3.5 s B. 7.0 s C s D s

A car with a velocity of 30 m/s accelerates uniformly at the rate of 2.0 m/s 2 for 10 s. What is its final velocity? A. 50 m/s 2 B. 40 m/s 2 C. 40 m/s D. 50 m/s

A car accelerates uniformly at a rate of 0.50 m/s 2 for 10 s. Its final velocity is 23 m/s. What is the initial velocity? A. 18 m/s 2 B. 28 m/s C. 28 m/s 2 D. 18 m/s

A car moving at a speed of 8.0 m/s enters a highway and accelerates at 3.0 m/s 2. How fast will the car be moving after it has accelerated for 56 m? A. 24 m/s B. 20 m/s C. 18 m/s D. 4 m/s

A bike accelerates from rest to 15 m/s in 3.5 seconds. How far does the bike travel during this time interval? A. 4.3 m B m C m D. Need more info

Team Scores PointsTeamPointsTeam 9.6Devilish Demetrius 8.4Joyful Joes 8DJ Jazzy Jay and the... 8Pathetic Patrick 7.4Terrible Toms

You throw a ball straight up into the air. After it leaves your hand, at what point in its flight does it have the maximum value of acceleration? A. its acceleration is constant everywhere B. at the top of its path C. halfway to the top of its trajectory D. just after it leaves your hand E. just before it returns to your hand

When throwing a ball straight up, which of the following is true about its velocity (v) and its acceleration (a) at the highest point in its path A. both v = 0 and a = 0 B. v  0, but a = 0 C. v = 0, but a  0 D. both v  0 and a  0

An object, initially at rest, falls freely near the Earth's surface. How long does it take the object to attain a velocity of -98 m/s? A. 0.1 s B. 10 s C. 98 s D. 980 s

A projectile is fired vertically upward with an initial velocity of +29 m/s. The projectile arrives at its maximum altitude in 3.0 s. How high does the projectile travel? A m B m C m D m

A 75-kg swimmer steps off a 10.0-m tower. What is the swimmer's velocity on hitting the water? A m/s B m/s C m/s D. 0 m/s

Team Scores PointsTeamPointsTeam 14Devilish Demetrius 12Joyful Joes 11.8Pathetic Patrick 11.6DJ Jazzy Jay and the... 11Terrible Toms

You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their separation? A. the separation increases as they fall B. the separation stays constant at 4 m C. the separation decreases as they fall D. it is impossible to answer without more information

You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their velocities? A. both increase at the same rate B. the velocity of the first rock increases faster than the velocity of the second C. the velocity of the second rock increases faster than the velocity of the first D. both velocities stay constant

The graph of position versus time for a car is given below. What can you say about the velocity of the car over time? A. it speeds up all the time B. it slows down all the time C. it moves at constant velocity D. speeds up then slows down

The graph of position vs. time for a car is given below. What can you say about the velocity of the car over time? A. It speeds up all the time B. It slows down all the time C. It moves with constant velocity D. speeds up then slows down

Consider the line labeled A in the v vs. t plot. How does the speed change with time for line A? 1. decreases 2. increases 3. stays constant 4. Increases then decreases

Team Scores PointsTeamPointsTeam 16.4Devilish Demetrius 14.8Joyful Joes 14.2Pathetic Patrick 13.8DJ Jazzy Jay and the Terrible Toms

Consider the line labeled B in the v vs. t plot. How does the speed change with time for line B? 1. decreases 2. increases 3. stays constant 4. decreases then increases

You drop a rubber ball. Which of the graphs represents the v vs. t graph for this motion? v t a v t b v t c v t d 1. Graph A 2. Graph B 3. Graph C 4. Graph D

You toss a ball straight up in the air and catch it again. Which of the above plots represents the v vs. t graph for this motion? 1. Graph A 2. Graph B 3. Graph C 4. Graph D

Montana is driving on a highway when she sees a deer in the road. She slows to a stop, honks her horn causing the deer to run away, and then speeds up to get to the Miley Cyrus concert. Which graph represents her motion? 1. Graph A 2. Graph B 3. Graph C 4. Graph D

What is the object’s displacement between 2 seconds and 4 seconds? 1. 6 m m m m

Team Scores PointsTeamPointsTeam 18Joyful Joes 18Devilish Demetrius 16.4Terrible Toms 16.2DJ Jazzy Jay and the Pathetic Patrick

Team MVP PointsTeamParticipant 23Joyful Joes10 21Devilish Demetrius2 21Pathetic Patrick23 21Terrible Toms24 20DJ Jazzy Jay and the Fun... 7