Class XI

The SI unit of retardation is
  1. ms-1
  2. ms-2
  3. ms2
  4. m
A train moving with a uniform speed of 54 kmph. What is its speed in m/s?
  1. 15 m/s
  2. 1.5 m/s
  3. 9 m/s
  4. 90 m/s
A truck covers 40 km with an average speed of 80km/h. Then it travels another 40 km with an average speed of 40 km/h. The average speed of the truck for the total distanced covered is
  1. 40 km/h
  2. 45km/h
  3. 48km/h
  4. 53km/h
Which of the following can determine the acceleration of a moving object?
  1. area of velocity-time graph
  2. slope of velocity-time graph
  3. area of distance-time graph
  4. slope of the distance time-graph
The equation v = u + at gives information as
  1. velocity is a function of time
  2. velocity is a function of position
  3. Position is a function of time
  4. Position is function of velocity and time
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