A gun tilted upward at 30 degree fires a bullet with a speed of 215 m/s. What is

Question

A gun tilted upward at 30 degree fires a bullet with a speed of 215 m/s. What is the component of the bullet's velocity parallel to the ground? An apple falls straight down from an apple tree growing on a 20 degree slope The apple hits the ground with a speed of 16.2 m/s What is the component of the apple s impact velocity parallel to the ground? A boy throws a rock wah an initial velocity of 2 IS m/s at 30.0 degree above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory? What is the maximum distance we can shoot a dart, from ground level, gives a maximum initial velocity of 2.78 m/s?

Explanation / Answer

10) component of bullet's velocity parallel to the ground is v*cos(theta) = 215*cos(30) = 186.2 m/s

11) Since the apple is falling vertically straight down,then component of apple's impact velocity parallel to the ground is zero

12) time taken to reach maximum height T = u*sin(theta)/g = 2.15*sin(30)/9.81 = 2.15*0.5/9.81 = 0.109 s

13) hmax = u^2/(2*g) = (2.78*2.78)/(2*9.81) = 0.393 m

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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