Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 2: Q14. (page 41)

Can an object have zero acceleration and non-zero velocity at the same time? Give examples.

Short Answer

Expert verified

Yes, an object can have zero velocity and still be accelerating.

Step by step solution

01

Step 1. Definitions of velocity and acceleration

Velocity is a vector quantity and is defined as the rate of change of displacement of an object with time. On the other hand, acceleration is the time rate of change of velocity.

02

Step 2. Determination of velocity for zero acceleration

The acceleration is a=dvdt.

For zero acceleration, 0=dvdt.

This implies that the velocity is constant. Now, this constant value can take up any value, such as 5m/sor 7km/h.

For example, a car is under straight-line uniform motion, moving with a non-zero constant velocity of 80km/h. In this case, the acceleration is zero as there is no change in velocity.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A bird can fly at 25 km/h. How long does it take to fly 3.5 km?

A baseball is seen to pass upward by a window with a vertical speed of 14 m/s. If the ball was thrown by a person 18 m below on the street, (a) what was its initial speed, (b) what altitude did it reach, (c) when was it thrown, and (d) when does it reach the street again?

A person jogs eight complete laps around a 400 m track in a total time of 14.5 min. Calculate (a) the average speed and (b) the average velocity in m/s.

Question: A ball is thrown straight up. What are the velocity and acceleration of the ball at the highest point in its path?

(a) v=0,a=0.

(b) v=0,a=9.8m/s2up.

(c) v=0,a=9.8m/s2down.

(d) v=9.8m/sup,a=0.

(e) v=9.8m/sdown,a=0.

Suppose a car manufacturer tested its cars for front-end collisions by hauling them up on a crane and dropping them from a certain height. (a) Show that the speed just before a car hits the ground, after falling from rest a vertical distance H, is given by2gH. What height corresponds to a collision at (b) 35 km/h (c) 95 km/h.
See all solutions

Recommended explanations on Physics Textbooks

Quantum Physics

Read Explanation

Particle Model of Matter

Read Explanation

Further Mechanics and Thermal Physics

Read Explanation

Physical Quantities And Units

Read Explanation

Classical Mechanics

Read Explanation

Oscillations

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free