Abus traveled south along a straight path for 3.2 hr with an average velocity of 88 km/hr, stopped for 20.0 min, then traveled south for a 2.8 hr with an average velocity of 75 km/hr. what is the change in the position for the entire trip?

The change in position of the entire trip is d = 491.6 Km

Explanation:

Given,

The time taken by the bus to travel south before halting, is t = 3.2 hr

The velocity of the bus is, v = 88 Km/hr

The distance covered by the bus is given by the formula

                                    d = v x t   Km

Substituting the values in the equation

                                     d = 88 Km/hr x 3.2 hr

                                        = 281.6 Km

The distance traveled by bus before stopping for 20 minutes is 281.6 Km

The bus continued to travel after stopping for 20 minutes.

The taken by the bus to travel, t = 2.8 hr

The average velocity of the bus, v = 75 Km/hr

The distance traveled by bus can be found by using the above formula

                                      d = 75 Km/hr x 2.8 hr

                                         = 210 Km

The distance covered by the bus after stopping for 20 minutes is 210 Km

Adding the two distances traveled by the bus gives the total traveled distance.w

Therefore, the change in the position for the entire trip is, d = 491.6 Km

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

answerdmitry mendeleyev made a workable classification of the elements