Question

Car is travelling at 20 metre per second along the road child runs out into the road 50 metre ahead and the car driver steps on the brake pad what must be deacceleration if the child should be safe?

Answer 1

Answer:

-4m/s

Explanation:

Speed of car=20m/s

Distance of child from the car=50metres(Given)

So,

Initial velocity(u)=20m/s

Final velocity(v)=0m/s

Formula of acceleration=2as=v²-u²

Rearranging the formula,we get

a=v²-u²/2s

a=0²-20²/2*50

=0-400/100

-400/100

-4m/s²

plz mark as brainliest and follow me

Answer 2

Answer:

The driver sees a problem on the road ... If the car is initially travelling at u m/s, then the stopping distance d m travelled .... The corresponding units for velocity (speed) will be metres.