Question

hi guys
plz answer 1st and 2nd Question
ncert class 9 ch 8
UNNECESSARY ANSWERS WILL BE DELETED
BEST ANSWER WILL BE MARK AS BRAINLIST
IT IS URGENT ​

Answer 1

1)

Scalar quantities: Temperature, mass, volume, speed, time, distance, electric charge, density, work and energy. Vector quantities: Displacement, velocity, acceleration, force, momentum and weight.

2)Speedometer measures instantaneous speed and the odometer measures the distance travlled by the body (vehicle). Answer: Odometer is a device used to measure the distance travelled by the vehicle.

3) a 8.333 metres per second

b

18 kilometres per hour