Question

Numerical Problem (Science: force and motion)
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Answer 1

Answer:

a) ans:

distance = 100m

time = 5 s

speed = distance / time

= 100 / 5

= 20 m/s

b) ans:

velocity = 20m/s

time. = 10 s

distance = velocity × time

= 20 × 10

= 200 m

c) ans:

initial velocity = 15m/s

final velocity = 40m/s

time = 10s

average velocity = v + u/2

= 40 + 15 /2

= 55 /2

= 27.5 m

acceleration = v - u / t

= 40 - 15 / 10

= 25 / 10

= 5 /2

= 2.5m/s²

d) ans :

u = 0 m/s

a = 5m/s²

t = 10s

v = u + at

v = 0 + 5 × 10

v = 50 m/s

Hope this will help you...

I think the subject is physics not enviromental science.