State which of the following situations are possible

(a) An object with a constant acceleration but zero velocity is possible. For example, when an object is just released from a height, then it is being acted upon by a constant acceleration of `9.8 m//s^(2)` (called acceleration due to gravity) but its initial velocity is zero. (b) An object moving in a certain direction with an acceleration in the perpendicular direction is possible. For example, when an object is moving with uniform motion in a circle, then the motion of the object at any instant of time is along tangent to the circle at that instant but the (centripetal) acceleration is along the radius of the circle (which is perpendicular to the direction of motion along the tangent).

When a pebble is tied with an end of string and it is whirled in horizontal circular motion with the other end of the string at the centre of circular path, then it has a constant magnitude of centripetal acceleration towards the centre. Hence the acceleration is in perpendicular direction to the motion of pebble.

In Swift, a string is a sequence of characters. So a string can contain small and larger words. Hence using the following methods we can find the largest word in the string. Using component() method Using user-defined method Example Input String: "Rabbit run fast" Output String: "Rabbit" Here, the largest word among all the given words in the string is “Rabbit”. Method 1: Using component() method The components() method is used to create an array of substrings from the given string, where each substring is separated by the specified separator. So here we use the components(separatedBy:.whitespaces) method ... Read More Tween.js is a JavaScript library that is mainly used when we want to tween or animate an HTML5 or JavaScript property. It can work standalone as well as when integrated with Easel.js. In this tutorial, we will learn how we can make use of Tween.js with the help of a few examples. Before we go on to the main example, let's first discuss a few simple tweens so that when we use them in the main example, you don't get overwhelmed. Simple Tween In this tween, we will tween the alpha property of the target from 0 to 1 for ... Read More A password is a combination of various characters of a specified length and is used to authenticate or gain access to the system or login to an account. It is designed for security purposes and ensures that only an authorized user can access or log in to the specific account. It is important to select a strong password so that other...

(a) The given situation is possible. When an object is thrown upwards (under gravity only), it reaches to a maximum height where its velocity becomes zero. However, it still has an acceleration acting in the downward direction (acceleration due to gravity). Note: This is possible for a given point of time, however, it is not possible for a period of time.

State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving with an acceleration but with uniform speed. (c) an object moving in a certain direction with an acceleration in the perpendicular direction - Infinity Learn Physics State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving with an acceleration but with uniform speed. (c) an object moving in a certain direction with an acceleration in the perpendicular direction State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving with an acceleration but with uniform speed. (c) an object moving in a certain direction with an acceleration in the perpendicular direction Solution: (a) Possible. Let a ball be thrown in vertically up with some initial speed u. After some time its velocitydecreasesand at the maximum height, its velocity will be zero but it has a constant acceleration(9.8m/s 2) inthe downward direction due to gravity. (b) Possible. When a body is moving in a circular path with constant speed, it is accelerating due to change in direction of motion. (c) Possible. Let a stone is tied at its end with a string and is whirled in horizontal circular motion with theot...