QUESTION 6 Figure 3.1 A projectile is fired from the origin (at y-0 m) as shown

Question

QUESTION 6 Figure 3.1 A projectile is fired from the origin (at y-0 m) as shown in Figure 3.1. The initial velocity components are Vox -650 m/s and Voy 43 m/s. The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q. In Figure 3.1, the y-component of the acceleration of the shell at point P is closest to: +5 m/s +10m/s2 e zero 0-10 m/s 2 points S QUESTION 7 IfI weigh 741 N on Earth and 5320 N on the surface of a nearby planet, what is the acceleration due to gravity on that planet? 61.2 m/s2 70.4 m/s

Explanation / Answer

6)

Ans: +10 m/s2

At the max height of the projectile, v = 0 but a is not zero. It equals the g.

7)

On Earth, g = 9.81 m/s2

So, mass = W/g = 771/9.81 = 75.54 kg

On the nearby planet, W = 5320 N

we know, W = mg

so: g = W/m = 5320/75.54 = 70.4 m/s2

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

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