The number of cycles of a periodic process that occur per unit time is called A.

Question

The number of cycles of a periodic process that occur per unit time is called A. amplitude B. frequency C. period D. wavelength If the velocity of an object is negative, A. its speed is decreasing B. its velocity does not exist C. it is reversing direction D. it is moving in the direction labeled negative A ball thrown upwards reaches a maximum height and then comes back down to the original level. As the ball is going upwards A. the velocity and acceleration both point up B. the velocity points up and the acceleration down C. the velocity points down and the acceleration up D. the velocity and acceleration both point down When a body moves in circular motion at constant speed A. the velocity and acceleration point in the same direction B. the velocity and acceleration point in Opposite directions C. the velocity and acceleration point perpendicular to each other D. the acceleration is zero

Explanation / Answer

1. B

2. D

velocity negative means in the opposite direction

3.C

velocity upward and acceleration down due to gravity

4.C

velocity will be tangential

acceleration will be centripetal acceleration perpendicular to the velocity

The direction of the centripital acceleration is always inwards along the radius vector of the circular motion

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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