Question

A train is travelling at a speed of 8okm/h. Brakes are applied so as to produce a uniform acceleration of 0.2m/s2.Find how far will the train go before it stops? 2. A racing car has a uniform acceleration of 4m/s2. What distance will it cover in 10s after start?

Pls answer this question

Answer 1

Explanation:

u=108km/h=

60×60

108×1000

=30m/s

a=−1m/s

2

v=0m/s

From 3rd equation of motion,

2as=v

2

−u

2

−2×1×s=0

2

−30×30

s=

−2×1

−30×30

s=450m

Answer 2

Answer:

Given,

u=108km/h=

60×60

108×1000

=30m/s

a=−1m/s

2

v=0m/s

From 3rd equation of motion,

2as=v

2 −u 2

−2×1×s=0

−30×30

s=450m