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DPM 1 Review 25-26

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  • A car travels 120 kilometers in 2 hours. What is the car's average speed?
    60 km/h
  • When balanced forces act on an object, the object will
    Stay at rest or continue moving at a constant speed
  • What is the difference between speed and velocity?
    Speed is how fast/slow an object is moving. Velocity is the speed and the direction the object is going.
  • On a distance-time graph, how can you tell if an object is moving at a constant speed?
    If it is a straight diagonal line
  • What direction will the rope move and if so what direction?
    Yes, to the Left
  • A book is resting on a table with gravity pulling it down with a force of 10 N, and the table pushing up with a force of 10 N. What is the net force acting on the book?
    0 N
  • What is the formula to calculate speed?
    speed= distance / time
  • Is Tennis ball balanced or unbalanced?
    Unbalanced
  • What are the 3 conditions Earth has to sustain life?
    Proximity to the sun, presence of water, and composition of the atmosphere
  • Is the net force on the wagon balanced or unbalanced?
    Unbalanced
  • What is a comet
    chunk of ice and rock that releases gases as it orbits the sun
  • Jamal walks from A to B to C and stops at D. What would be his distance and displacement?
    Distance 11m; Displacement 5m
  • What is an asteroid and where are they located?
    a rock in orbit between Mars and Jupiter that orbits the sun.
  • How does friction affect the motion of a car on a road?
    Friction between the tires and the road helps the car slow down
  • What keeps the planets in orbit?
    Sun's gravity
  • If two people are pushing a box in opposite directions with forces of 50 N to the right and 30 N to the left, what is the net force on the box and which direction would the box move?
    20 N to the right
  • Where is the Kuiper Belt located?
    Beyond the orbit of neptune
  • Why does the sun keep everything in orbit?
    Mass
  • If two people are pushing a box in opposite directions with forces of 50 N to the right and 30 N to the left?
    Is this balanced or unbalance?
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