Olympiad – Class VII – Science - Phy - Motion and Time

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Question - 1

A pendulum takes 0.5 s to make one oscillation about its mean position. How long will it take to make 5 oscillations?

  • A 5 s
  • B 7.5 s
  • C 2.5 s 
  • D 10 s

Question - 2

Which ofthe following are NOT in uniform motion?
(i) A bullet travelling with a constant speed in a straight line
(ii) A swinging pendulum
(iii) The rotation of earth

  • A Only (i) and (ii)
  • B Only (ii) and (iii)
  • C Only (i) and (iii)
  • D (i), (ii) and iii

Question - 3

Sunitha can type 1800 words in half an hour. What is her typing speed in words per minute?

  • A 60
  • B 600
  • C 750
  • D 3000

Question - 4

A truck travels 840 km using 60 litres of diesel. What is the fuel consumption of the truck?

  • A 14 km per litre
  • B 14 litre per km
  • C 140 km per litre
  • D 140 litre per km

Question - 5

A water pipe has water flowing through it. Which of the following changes would increase the speed of water flow through the pipe?

  • A Increase the water pressure
  • B Increase the length of pipe
  • C Make the pipe coiled
  • D Make the pipe narrower

Question - 6

Which of the following does NOT show oscillatory motion?

  • A Swing
  • B Fan
  • C See-saw
  • D Pendulum

Question - 7

A train starts from station A and reaches station D which is 150 km away. It has scheduled halts at station Band C for 5 minutes each. The distance between A and B is 50 km and C and D is 60 km. The train starts at 5 p.m. from A and reaches D at 8.30 p.m. What is its average speed in m s-1 ?

  • A 11.88 m s-1
  • B 15.4 m s -1
  • C 8.41 m s-1
  • D 5.83 m s-1

Question - 8

A man runs 10 km in 30 min. What is his speed per hour?

  • A 5 km h-1
  • B 10 km h-1
  • C 15 km h-1
  • D 20 km h-1

Question - 9

Study the graph given below.

What can be concluded about the speed in the above graph?

  • A It goes on increasing.
  • B It decreases first and then becomes zero.
  • C It increases first and then becomes constant but not zero.
  • D It decreases first and then becomes constant but not zero.

Question - 10

With what speed should a car travel so that it can cover a distance of 5 km in 5 min?

  • A 1 km h-1
  • B 5 km h-1
  • C 12 km h-1
  • D 60 km h-1