A car traveling 20m/s alonag a road. A child runs out into the road 50m ahead and the car driver steps on the break pedal .What must the car declaration be if the car is to stop just before it reaches the child
Answers
Answered by
3
Explanation:
s=50m
u=20m/a
v=0
v²=u²+2as
0²=20²+2×a×50m
-400=100a
a=-400/100
a=-4m/s²
Similar questions