field your textbook here, including section titles, and then read them. yuu tume

Question

field your textbook here, including section titles, and then read them. yuu tume to the lab study the sections on motion of charged particles in uniform electric and review projectile motion, conservation of mechanical energy. List the relevant sections of Pre-Lab E your TA can check them off when you enter the lab. Later, you will hand them in with your report. xercises: Do the following exercises before you come to lab. Bring them with you so Let's suppose for simplicity that the gravitational field strength is g 10 m/s2. A projectile is shot horizontally from a height of 30 meters, quite a way up, with initial speed vo 10 m/s. It strikes the side of a tower 30m after traveling a horizontal distance of 20 meters. Show your work. (a) at what height y above the ground does the projectile strike the 20m tower? (b) what are the vertical and horizontal components v, Vy of its velocity when it hits the tower? (Hint: time of flight) *O William A Schwalm 2-1 UND Physics CPSL

Explanation / Answer

(a)

Given that,

a = 10 m/s^2

vo = 10 m/s

d = 20 m

Time t = d / v

t = 20 / 10 = 2 s

vertical distance travelled by the projectile in time t,

s = (1/2)at^2 = (1/2)*10*2^2

s = 20 m

Height above the ground,

h = 30 - 20

h = 10 m

(b)

Horizontal component of velocity,

there is no accelration in horizontal so, the velocity will be same.

vx = 10 m/s

Vertical component of velocity,

vy = sqrt (2gs)

vy = sqrt (2*10*20)

vy = 20 m/s

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

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