karias1980 karias1980

10-04-2018
Physics

contestada

A train travels 79 kilometers in 2 hours, and then 77 kilometers in 3 hours. What is its average speed?

Answers? and Units?

Respuesta :

zhaotianyu369 zhaotianyu369

11-04-2018

Average speed=total distance traveled/time. Total distance=the sum of the two short distances=79*2+77*3=389 km. Total time used to travel is 2+3=5 hr. Average speed is 389/5=77.8 km/hr.

Answer Link

Otras preguntas

what fruits makes your hair healthy

What is the f of x over the g of x when f(x) = − 2x3 + x2 + 16x − 15 and g(x) = x + 3?

At a basketball game, for every 2 baskets team A scored, team B scored 5 baskets. The ratio of the number of baskets scored by team A to the number of baskets f

The balance of a loan is $2,570 in January, and the monthly payment is $125.50. The relationship between the loan balance, y, and the number of monthly payments

Jill paid an annual premium of $2,000 in total coverage for her homeowner's insurance, including $250,000 in damage coverage and $250,000 in liability coverag

Blood pressure is one of the major variables doctors monitor in their patients. Using the information you have obtained in this activity, construct an explanati

write 1/2y - 1/3x -1=0 in general form

Natural selection is an evolutionary mechanism by which _______.

The cost, c, of a health club membership is related linearly to its length in months, m. If a 12-month membership costs $260 and an 18-month membership costs $3

What does darkness symbolize in My father sits in the dark?