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Force and Motion

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  • Which of the following is a unit of time? 1. km/hr 2. hr 3. km 4. mi
    hr
  • What is the net force with direction?
    3N + 3N = 6N (Left)
  • Which object is moving with the greatest speed?
    object at D
  • Describe the motion at Point B and D
    They are moving at constant speed
  • Taylor rides her bike 20 m North, then rides the bike 15 m back. What is her displacement?
    5 m
  • In the graph shown, which letter represents an object that is at rest?
    C
  • Ray runs 30 feet North, 30 feet West and then 30 feet South. What is his distance?
    90 feet
  • What is the net force with direction?
    6N + 3N = 9N (Right)
  • Describe the motion at Point A
    The object is at rest
  • What is average speed?
    average speed is total distance divided by total time
  • Describe the motion at Point C
    speeding up / accelerating
  • What is the net force and direction?
    6N - 5N =1N (Right)
  • Bill jogs 400 meters to the park, turns around, and runs 200 meters back towards his house. He does so in 8 minutes. What is Bill's average speed?
    75 m/min
  • A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
    10 m/s
  • Find the velocity of a truck that travels 75 miles north in 2.5 hours.
    30 mph north
  • What is the net force with direction?
    7N - 2N = 5N (left)
  • describe the motion of the moving object
    it is moving at constant speed
  • Victor runs exactly5 laps around a 400 m track. What is his distance?
    2000 m
  • You can tell that an object is in motion relative to a
    Reference point
  • What is the motion from 7 sec to 10 sec
    constant speed
  • Jack walks 3 km North, and then turns eastand walks 4 km. What is the total distance?
    7 km
  • What is the net force?
    4N - 4N = 0N (Balanced)
  • What is the equation to calculate speed?
    speed = distance/time
  • Which of the following is a unit of distance ? 1. miles/hr 2. hr 3. km 4. min
    km
  • Jermaine runs exactly 2 laps around a 400 meter track. What is his displacement?
    0 miles
  • What is the velocity of a car that traveled a total of 75 kilometers north in 1.5 hours?
    50 km/hr north
  • David walks 3 m North, and then turns back and walks 3 m South. What is his displacement?
    0 m
  • Paul went north 5 miles, and then west 3 miles and finally south 2 miles. What is its distance?
    10 miles
  • Based on the graph, in which segment is the object at rest?
    segment B
  • Which of the following is a unit of speed? 1. km 2.hr 3. s 3.km/hr 4. hr/s
    km/hr
  • What is the formula to calculate speed?
    speed= distance / time
  • At what time is the object at rest?
    at t = 4s to t = 7s