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- Multiple ChoicePlease save your changes before editing any questions.What is the formula to calculate speed?Speed = time/distanceSpeed = distance/timeSpeed = distance x timeSpeed = time x distance
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is a unit for acceleration?km/sm/s2mi/hrft
- Multiple ChoicePlease save your changes before editing any questions.Can be measured in meters per second (m/s)DistanceTimeSpeedAcceleration
- Multiple ChoicePlease save your changes before editing any questions.What is velocity?the quickness of an objectthe location of an objectaccelerationspeed in a specific direction
- Multiple ChoicePlease save your changes before editing any questions.When a car goes around a corner at 20 mph, why do we say it accelerates?The car is accelerating because of the velocity is constantThe car accelerates because it's going 20 mphCars always accelerate when they are in motionThe car is accelerating because it's changing direction
- Multiple ChoicePlease save your changes before editing any questions.Calculate the average speed (in meter/sec) if a cheetah runs 180 meters in 10 seconds.198 m/sec170 m/sec12 m/sec18 m/sec
- Multiple ChoicePlease save your changes before editing any questions.A value that only has magnitude (a number)ScalarVectorSpeedVelocity
- Multiple ChoicePlease save your changes before editing any questions.Of the following, which is a vector?MassTimeSpeedVelocity
- Multiple ChoicePlease save your changes before editing any questions.Acceleration is defined as the CHANGE intime it takes for one place to move to another place.velocity of an object.distance divided by the time intervalvelocity divided by the time interval
- Multiple ChoicePlease save your changes before editing any questions.Acceleration only takes place when things speed up.TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.In each of the following cases, determine where the car has no acceleration ?A car shortly after a stoplight turns green.A car approaching a red lightA car with the cruise control set at 80 km/hA car turning a curve at a constant speed
- Multiple ChoicePlease save your changes before editing any questions.A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?24 m/s218 m/s216 m/s216 m/s
- Multiple ChoicePlease save your changes before editing any questions.A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 seconds. What is the acceleration?-7.5 m/s-7.5 m/s2-0.5 m/s27.5 mi//hr
- Multiple ChoicePlease save your changes before editing any questions.A drag racer accelerated from 0 m/s to 200 m/s in 5 s. What was the acceleration?0 m/s40 m/s2-40 m/s240 m/s
- Multiple ChoicePlease save your changes before editing any questions.Acceleration can be classified as _______________Speeding upSlowing DownChanging directionsAll of the above
- Multiple ChoicePlease save your changes before editing any questions.A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?750 seconds35 seconds0.3 seconds3.3 seconds
- Multiple ChoicePlease save your changes before editing any questions.
In which of the following situations would a car be speeding up while traveling forward?
positive velocity and positive acceleration
positive velocity and negative acceleration
negative velocity and positive acceleration
negative velocity and negative acceleration
- Multiple ChoicePlease save your changes before editing any questions.
In which of the following situations would a car be slowing down while traveling backwards?
positive velocity and positive acceleration
positive velocity and negative acceleration
negative velocity and positive acceleration
negative velocity and negative acceleration