Which of the following is an example of motion?

Which of the following is an example of motion?

In which of the following examples of motion, can the body be considered approximately a point object : (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the round.

Which of the following is an example of acceleration?

When the car is speeding up. When the car slows down. When you fall off a bridge. The car turning at the corner is an example of acceleration because the direction is changing.

Which is the best example of speed?

Speed is a way of measuring how quickly something is moving or being done, or something moving fast. An example of speed is a car being driven 45 miles per hour. An example of speed is someone cleaning a room in 10 minutes. An example of speed is how quickly a jaguar runs.

What is a real life example of speed?

Interesting Facts about Speed and Velocity The first scientist to measure speed as distance over time was Galileo. A speedometer is a great example of instantaneous speed. The speed of light can also be written as 186,282 miles per second. The speed of sound in dry air is 343.2 meters per second.

Can a body have zero velocity but a non-zero acceleration?

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

Can an object have constant speed and still be accelerating give an example?

Yes, a body can have a constant speed and still be accelerating. For example you revolve a stone connected by a string in a circular motion. You will notice the stone rotates with a constant speed and yet have a centripetal acceleration which is directed towards the centre of the circle.

Why do objects stay in circular motion?

As the centripetal force acts upon an object moving in a circle at constant speed, the force always acts inward as the velocity of the object is directed tangent to the circle. For this reason, the kinetic energy and therefore, the speed of the object will remain constant.