Question

1. A body in uniform motion covers a distance of 200 m in 10 s. Calculate the speed of the body

2. A scooter travelled 4m in 1s for 7s. Calculatethe scooter's average speed and the total distance travelled.

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Answer 1

Answer:1.Suppose the acceleration is a then using the second equation of motion, s=ut+  

2

1

​  

at  

2

 

and putting t=2sec and u=10m/s  

we get 20=10×2+a×2

or a=0 that is uniform motion.

Explanation:

Answer 2

Answer:

1) 20 m/s and 2) 4 m/s

Explanation:

1) Speed = Total distance

                   Total time

= $\frac{200}{10} \\= 20 m/s$ is the speed

2) Speed = Total Distance

                    Total time

first the distance = 4 x 7= 28

so the distance = 28

Average speed = 28

                               7

the Average speed = 4m/s