uavels llilohg à parabolic arc before it strikes the ground. Which one of the fo

Question

uavels llilohg à parabolic arc before it strikes the ground. Which one of the following statements is ly true? a. The acceleration of the ball decreases as the ball moves upward. b. The velocity of the ball is zero m/s when the ball is at the highest point in the arc c. The acceleration of the ball is zero m/s when the ball is at the highest point in the arc. The x-component of the velocity of the ball is the same throughout the ball's flight The velocity of the ball is a maximum when the ball is at the highest point in the arc. d e. A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively. What is the speed of the projectile when it is at the highest point in its trajectory? 4. a. 0 m/s b. 20 m/s d. e. 30 m/s 40 m/s 50 m/s 5

Explanation / Answer

Q4.
vix = 30 m/s
viy = 40 m/s

At the top, vy = 0.

So the speed gets contribution from x-component only.

So,
v = 30 m/s

So option c.

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

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