Question

Gogi was driving at 20 m/s he applied brakes which generater force equal to 500N. find the distance after which the car will stop it. its mass is 100 kg.​

Answer 1

Answer:

5 m

Step-by-step explanation:

Solution;

Initial velocity (u) = 20 m/s

Final velocity (v) = 0 m/s

Force applied (F) = 500 N

Mass (m) = 100 kg

Now,

F= ma

or, 500 = 100.a

or, 500/100 = a

or, 5 = a

or, a = 5 m/s2

Again,

t = 2a/(v-u)

= 2x5/(0-20)

= 10/-20

= 0.5 s

At last;

s= (v+u)/2 x t

= (0+20)/2 x 0.5

= 10*0.5

= 5 m

Answer 2

Answer:

the correct answer will be 40m

Step-by-step explanation:

given

m= 100kg

u= 20m/s

v=0m/s

F=-500N

s=?

now,

F=ma

-500=100a

a=-5m/s²

2as=v²-u²

2×(-5)×s= (0)²-(20)²

-10s=-400

s=40m