Homework SourseA truck travels for 25 hours at an average speed of 70 mph 3
A truck travels for 2.5 hours at an average speed of 70 mph (31.3 m/s) on I-70 across central Kansas. Assuming the truck moves in approximately a straight line, how far did it go in the first half hour. (1 hour = 3600s)
A.) 70 km
B.) 56 km
C.) 338 km
D.) 113 km
E.) 35 km
A truck travels for 2.5 hours at an average speed of 70 mph (31.3 m/s) on I-70 across central Kansas. Assuming the truck moves in approximately a straight line, how far did it go in the first half hour. (1 hour = 3600s)
A.) 70 km
B.) 56 km
C.) 338 km
D.) 113 km
E.) 35 km
A.) 70 km
B.) 56 km
C.) 338 km
D.) 113 km
E.) 35 km
Solution
distance travelled by the truck is
d = v t
= (31.3 m/s)(3600 s) = 112.6 km = 113 km
Answer is (D)
