A melon is projected into the air with 100 J of kinetic energy in the presence o

Question

A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance. When it returns to its initial level its kinetic energy is A. less than 100 J. B. more than 100 J. C. 100 J. A motorcycle moving at 50 Km/h skids 10 m with locked brakes. How far will it skid with locked brakes when traveling at 150 km/h? A. 100 m. B. 30 m. C. 50 m. D. 90 m. A cannonball has more kinetic energy than the recoiling cannon from which it is fired because the force on the ball A. is more concentrated. B. meets less resistance than the cannon on the ground. C. acts over a longer distance.

Explanation / Answer

17)

Ans: A. less than 100J

Because some energy will be lost due to air resistance.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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