Question

9.Read the following and answer any four questions

Rajesh was driving his car at a speed of 120 km/hr. though the speed

limit was 50 km/hr. As a result he collided with an another stopped

car and got serious injuries. A person passing by stopped and

helped Rajesh to get out of the car and returned to the home safely.

(i) Define speed.

(ii) What values were shown by the person who helped Rajesh.(iii). If we denote speed by S, distance by D and time by T, the

relationship. between these quantities is

(a) S = D× T

(b) T =S/D

(c) S= 1/T × D

(d) S =D/T

iv. An athlete covers 300 m in 5 seconds .What is his average speed ?

a. 30 m/s

b. 60 m/s

c. 50 m/s

d. 75m/s

v. S.I unit of speed is

a. m/s

b. km/s

c. m/h


who ever will ans the question will make as he brainiest ans​

Answer 1

Answer:

I am not sure about the new

Answer 2

1. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.

(ii) d)S =D/T