question 10 please the answer is 9.1m/s show me step my step thank you Dack down

Question

question 10 please the answer is 9.1m/s show me step my step thank you

Dack down past a window which is 1.47m ligh If the toral 15 1.0 s, find the height above the window the pot rises gat is I Suppose the first one-fourth of the distance between +18 m/s. The average velocity for the remainder of the trip is +51 the entire trip? 7. two points is covered with an average at is the average velocity for 8. A train has a length of 92 m and starts from rest with a constant acceleration at t -0. At this iastant car just reaches the end of the train. The car is moving with a constant velocity. Att 14 s, the car reaches the front of the train. Ultimately, however, the train pulls ahead of the car, and at a timet 28 s, the car is again at the rear of the train. Find the magnitude of C the car's velocity a acceleration. e t 9. A commuter train can minimize the time t between two stations by accelerating (a, -01 mis) for time t), then undergoing a negative acceleration (a--0.5 m/s) by using his brakes for a the stations are only 1 km apart of travel t, and the time t,. time ty Simce the train never reaches its maximum velocity. Find the minmtime you adjust your garden hose nozzle for a hard stream of water. You point the nozzle vertically the ground. When you quickly move the nozzle away form the upward at a height of 1.5 m above vertical, you hear the water striking the leaves the nozzle? T 1987, Art Boileau won the Los Angeles Marathon, 26 ani and 385 in 2 h, 13 mi, d 9s rsrant had during the remaining part the At the 2 tmish line race and th after Boileau. Assume that Boileau maintained one constant average speed daring the hern ning at the same speed when Boileau passed the 21-mi marker 1-m mi marker, Boileau had a 2.50-min. lead on the second place winner, who later crossed

Explanation / Answer

10] Use H = uyt + (1/2)gt2

since the nozzle is directed upwards, u = uy

1.5 = u(2) + (1/2)(9.8)(2)2

u = - 9.05 m/s or approximately - 9.1 m/s

the negative sign means that the water is falling downwards.

so, the speed (magnitude) is: u = 9.1 m/s.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.