physics

posted by .

A cyclist is cycling at a uniform velocity of 8m/s for 8 seconds. He then stops paddling and
the cycle comes to rest in next ten seconds. Draw the velocity-time graph and calculate: (i)
the average retardation.(ii) the distance covered with uniform velocity.(iii) the distance
covered with variable velocity.(iv) the average velocity of the cyclist.

  • physics -

    You paddle a canoe but you pedal a bicycle. What do you mean by "retardation?"

    You will have to draw the graph yourself. If you plot V on the y axis and time on the x axis, you have a horizontal line at V = 8 from t = 0 to t = 8; then the line drops in a slanted straight path to V=0 (the x axis) at t = 18.

    ii) 8 * 8 = 64 m
    iii) (1/2)*10*8 = 40 m
    iv) (64+40)/(10+8) = 5.78 m/s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A body at rest is given an initial uniform acceleration of 8m/s2 for 30s after which the acceleration is reduced to 5m/s2 for the next twenty seconds. The body maintains the speed attained for 60s, after which it is brought to rest …
  2. physics

    A cyclist is cycling at uniform velocity of 8m/sec for 8 sec then applies brakes and cycle come to rest in next 10 sec. calculate a)Distance traveled by uniform velocity. b)distance traveled by non-uniform velocity c)total distance …
  3. physics

    a body moves with a uniform velocity of 2m/sec for 5 sec then velocity was uniformly accelerated and a velocity of 10m/sec was achieved in next 5 sec.then brakes were applied uniformly and body comes to rest in next 10 sec.calculate …
  4. physics

    the velocity time graph of a car start from rest and it accelerate uniformly at a rate 3m/s2 for 5seonds if attain the velocity which maintain for 1m the car then brought to rest by a uniform retardation after another 30m. draw the …
  5. physics

    a car travels at uniform velocity of 20m/s for 5 seconds, the breaks are then applied and the car comes to rest with uniform retardation in further 8 seconds. draw a graph of velocity against time.How far does the car travel after …
  6. Physics

    A car accelerates from rest with a uniform acceleration of 1.7m/s for 10 seconds, its acceleration then reduces by 0.3m/s for 20 seconds of the motion, it then maintains the speed attained for another 20 seconds after which it decelerates …
  7. Physics

    A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion. 2. Calculate the …
  8. Science

    A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion. 2. Calculate the …
  9. Science

    A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion.
  10. Physics

    An electric train leaves a station starting from rest and attains a speed of 72km/hr in 10 second. It travels at that speed for 120 seconds. Then it undergoes uniform retardation for 20 seconds to come to halt at the next station calculate …

More Similar Questions