An automobile is traveling at 60 ft/s (about 40 mi/h or 65 km/h). If the reaction time is 0.5 s, how far does the automobile travel in this time?

9.03 metres

Explanation: Given that an automobile is traveling at 60 ft/s (about 40 mi/h or 65 km/h). If the reaction time is 0.5 s.

From the question above,

Speed = 65 km/m

Time = 0.5 s. Convert the second to hour.

0.5 / 3600

Speed = distance/time

65 = distance ÷ 0.5 /3600

65 = distance × 3600 /0.5

65 = 7200 × distance

Distance = 65/7200

Distance = 9.03 × 10^-3 Km

Convert the distance to metre by multiplying it by 1000

Distance = 9.03 × 10^-3 × 1000

Distance = 9.03 m

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//