Question

The question is from physics Ncert Chapter 8 motion this is text question from page no. 102

I NEED ALL ANSWERS ​

Answer 1

a-1-speed is scaler . velocity is vector.

2-s=distance/time.v=displacement/time.

3-speed is always+be.vel.can be positive, negative,or zero.

b-friction force depends upon ,

Force exerted by the body in surface.

contact surface.If they are rough friction is more,if smooth it is less.

Odometer is a device that measures distance travelled by automobile best on perimeter of wheel as the wheel rotates .

1 min=60 sec

5 min=5.60=300sec

s =distance/time

=300.3.10^8=9×10^10

Answer 2

Answer:

maybe helpful

Explanation:

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