NCERT Grade 7-Motion and Time-Answers – MySchoolPage

# NCERT Solutions for Class 7 Science

Find 100% accurate solutions for NCERT Class VII Science. All questions have been explained and solved step-by-step, to help you understand thoroughly. Free Download option available!

1.    Classification of motion

(i) Oscillatory motion

(ii) Straight line

(iii) Circular motion

(iv) Oscillatory motion

(v) Oscillatory motion

(vi) Straight line.

2.    (ii), (v).

3.    Time taken for 20 oscillation = 32 s

Time taken for 1 oscillation = 32s/20.

Time period = 1.6 s

4.   Distance = 240 km

Time = 4 h

Speed = distance/time

= 240 km/4 h

= 60 km/h

5.    Odometer reading at 8.30 AM = 57321.0 km

Odometer reading at 8.50 AM = 57336.0 km

Distance travelled = 15 km

Time taken = 20 min.

Speed = distance / time

= 15 km/20 min.

= 0.75 km/h = 0.75 × 60 = 45 km/h.

6.   Speed = 2 m/s

Time = 15 min = 15 × 60 s = 900 s.

Distance travelled = speed × time

2 × 900 s = 1800 m = 1.8 km.

7.

8.

9.     (iv) m/s.

10.   (ii) 25 km

11.    Speed = 100 m/10s = 10 m/s

12.    A

13.   (iii).

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