2 Which of the following describes motion? A change in mass over timeA change in position over massA change in distance over timeA change in mass over distance
3 How do you know that the car is in motion? A. The distance between the building and car changes.B. The time it takes the car to move is constant.C. The distance between the building and the car stays constant.
4 What is the SI or metric unit for distance? MilesGramsMeterFeet
5 What is used for comparison to tell if an object is in motion? directionreference pointSpeedvelocity
6 What is the formula needed to calculate speed of an object? distance x timedistance / timetime / distanceacceleration x timeI need help!
7 Joe Shmoe walks 30 meters in 10 seconds. What was his speed? 5 meters/second3 seconds/meter3 meters/secondI need help!
8 What is the only difference between speed and velocity? Speed is more complex while velocity is less complex.Velocity is time divided by distance and speed is distance divided by time.Velocity requires a direction while speed does not.Speed and velocity are calculated differently.I need help!
9 Which of the following is an acceptable unit for velocity? Meters per secondFeet per hourMiles per hour SouthMiles per hourI need help!
10 You are asked to create a graph that shows the speed of an object You are asked to create a graph that shows the speed of an object. What should be plotted on the x and y axes?Y axis = speed; X axis = timeY axis = time; X axis = distanceY axis = distance; X axis = timeY axis = time; X axis = acceleration
11 What is this graph showing? A person walking at varying speeds.A person walking at a constant speed and then stopping to rest.A person standing still.A person walked three miles.
12 What does this graph show? DistanceTimeDThe object is not moving.The object is moving at a constant speed.The object is moving at a constant speed then stopped to rest.The object is moving at varying speeds.
13 What does a steep slope of a line on a distance time graph indicate? Speed is fastSpeed is slowThe object is not movingSpeed is changing
14 Which of the following is NOT an example of acceleration? Walking in a straight line at a constant speedApproaching a stop signA ball rolling down a hillTurning around a corner at a constant speed
15 Which of the following best describes a decrease in speed? Positive AccelerationNegative AccelerationConstant velocityAverage speed
16 Suzie is running around a track at a constant speed of 5 m/s Suzie is running around a track at a constant speed of 5 m/s. Why is she accelerating?She is running at a constant speedShe is changing directionShe is speeding upShe is slowing down
17 What is plotted on the y-axis when graphing acceleration? SpeedTimeDistanceAcceleration
18 Force is measured in units of… m/sNewtonsm/s2grams
19 What is the net force? 10 N to the left 10 N to the right 0 N 10 N
20 What is the Net Force? 10 N to the left 10 N to the right 0 N 10 N
21 Which of the following arrows represents the force of friction? BACDABCD
22 Which one of the following forces opposes motion? gravityfrictionapplied forcecentripetal force
23 Why does the Earth have more gravity than the moon? The moon revolves faster than the EarthThe moon has less mass than the EarthEarth is a greater distance from the sun.The Earth has more water on it.I don’t know – I need help!
24 Ignoring air resistance, what object will hit the ground first when each is dropped from the same height?BaseballBowling ballBoth will hit at same timeI don’t know- I need help!
25 Which statement best describes gravity? Gravity pushes objects towards EarthGravity acts on all objects unless they are movingGravity pulls objects towards EarthGravity is as strong on Earth as on the moonI don’t know – I need help!
26 An object reaches its terminal velocity when… the force of gravity is greaterthe force of gravity and the force of air resistance are balancedthe force of air resistance is greaterI don’t know – I need help!
27 The tendency of an object to resist a change in motion is GravityFrictionInertiaMomentumI don’t know – I need help!
28 The greater the mass of an object… the lesser the gravity.the greater the inertia.the lesser the force.the lesser the inertia.I don’t know – I need help!
29 Which will have the greatest inertia? Bowling ballBaseballTennis BallPing pong ballI don’t know- I need help!
30 Your parent presses the car brakes while driving …which of the following describes your motion? Your body moves backwardYour body does not moveYour body moves forwardYour body remains at restI don’t know – I need help!
31 Newton’s Second Law states that… Objects in motion stay in motion.Objects at rest stay at rest.If a net force is applied onto an object, it will accelerate.For every action there is an equal and opposite reaction.I don’t know – I need help!
32 You are having difficulty pulling a pile of books in a wagon You are having difficulty pulling a pile of books in a wagon. What would be the best way to increase the acceleration of the wagon?Remove some books from the wagon.Add some books to the wagon.Remove the wheels from the wagon.Have a friend help you get on an exercise programI don’t know – I need help!
33 I don’t know – I need help! A person pushes a 10kg shopping cart down the isle. The cart accelerates at a rate of 2m/s2. How much force did he exert on the cart?5 N12 N20 N5 kgI don’t know – I need help!
34 What will happen to this object if the forces are applied? The object will accelerate to the left.The object will accelerate to the right.The object will stay at rest.The object will not accelerate.I don’t know – I need help!
35 Which of the following situations best illustrates Newton’s Third Law of Motion? A boy pulling a wagon, which accelerates.Inflating a balloon and releasing it.Moving forward when a car stops.I don’t know – I need help!
36 Which of the following describes Newton’s Third Law of Motion? Objects at rest stay at rest.If you apply a net force, acceleration will occur.Objects in motion stay in motion.For every action there is an equal and opposite reaction.I don’t know – I need help!
37 A space shuttle is being launched. Identify the action force. Release of GasGravityLift-OffWeight of ShuttleI don’t know- I need help!
38 How does Newton’s 3rd Law apply to your ability to walk? Ground pushes down and your foot pushes up.Your foot pushes down with a greater force and the ground pushes back with a lesser force.Your foot pushes down on the ground and the ground pushes back with an equal force.I don’t know, I need help.
39 What type of energy is present in a battery? Chemical energyElectrical EnergyMechanical EnergySolar EnergyI need help. I don’t understand.
40 What type of energy is required to operate this device? Electrical energyChemical EnergyMechanical EnergyAcoustic EnergyHelp!
41 What is the type of energy present in the sun? ElectricalKineticChemicalNuclearI don’t know. I need help.
42 What type of energy is dependent on the height of an object? Chemical potentialElastic potentialGravitational potentialKineticI don’t know. I need help.
43 At what point does the swinging pendulum have the most kinetic energy? BCDI don’t understand. I need help!
44 At what point would the swinging pendulum have the most potential energy? BCDI don’t understand. I need help!
45 In the simulation, what is the relationship between potential and kinetic energy? There is no relationship.As PE increases, KE increases.As PE increases, KE decreases.As PE decreases, KE decreases.I don’t understand. I need help!
46 Calculate the following: A rock with a mass of 10 kg sits at the top of a hill 20 m high. What is the potential energy?An object with mass of 6 kg is moving at a velocity of 2 m/s. What is the K.E.?
47 Electricity is produced in a hydroelectric plant when moving water turns a turbine. Which describes this energy transformation from the turning turbine to electricity?a. mechanical energy into electric energyb. nuclear energy into electric energyc. thermal energy into electric energyd. chemical energy into electric energye. Help! I don’t understand.
48 Joe Shmoe turns on a flashlight Joe Shmoe turns on a flashlight. Which of the following lists the energy transformations in the system?Electrical chemical mechanical radiantChemical electrical thermal mechanicalNuclear chemical electricalMechanical chemical Electrical radiantI don’t understand. I need help!