Question

(d) none of these
D. State true or false :
1. When you travel by a train, the person sitting next to you is in motion with respect to you
2. Speed is the number of oscillations per unit time.
3. Odometer is the device used to measure distance.
4. The shadow cast by a sundial is longer in the morning.
5. S.I. unit of speed is km/hr.
6. Every object moves with a constant speed.
7. Distances between two cities are measured in kilometres.
E. Identify the types of motion in the figures given below:​

Answer 1

Answer:

1. true
2. false
3. true
4. don't know
5. true
6. false
7. true

Explanation:

hope it is helpful...

Answer 2

Answer:

1. False

2. False

3. True

4. True

5. True

6. False

7. True