Given: Speed of car = v = 72 km/h = 72x 5/18 = 20 m/s, Timeįor uniform motion, Distance = speed x time = 20 x 1200 =Ī body rises vertically upward to a height of 100 m, in 5 seconds, then comes back at the same position after another 5 s. Find the distance travelled by it in 20 minutes Given: Speed of body = v = 20 m/s, Time taken = t = 10 sįor uniform motion, Distance = speed x time = 20 x 10 = 200ĭistance travelled by the body in 10 s is 200 mĪ car is travelling with a uniform speed of 72 kmph. Find the distance travelled by the body in 10 s. Given: Speed of car = v = 65 km/h, Time taken = t = 3 hoursįor uniform motion, Distance = speed x time = 65 x 3 = 195ĭistance between delhi and Agra is 195 kmĪ body travels at a uniform speed of 20 m/s. Time taken to cover 240 m, time = distance/speed = 240/60 =Īns: The speed of the train is 60 m/s and it will take 4 s to cover a distance of 240 mĪ car takes 3 hours to travel from Delhi to Agra with a uniform speed of 65 kmph. Given: Distance travelled by train = s = 120 m, Time taken = 2 sįind: Speed of train = v =? and time t =?įor uniform motion, speed = distance/time = 120/2 = 60 m/s Calculate the speed of the train and the time taken to cover a distance of 240m. What is its speed and velocity?Īns: The speed is 10 m/s and the velocity is 10m/s due eastĪ train moving with a uniform speed covers a distance of 120 m in 2 s. When there are displacements corresponding to the different time taken, then we need to determine the average velocity.A train travels a distance of 100 m due east in 10 seconds. Likewise, if 320 kilometers are traveled in 4 hours, the average speed is also 80 kilometers per hour. If a distance of 80 kilometers is driven in 1 hour, the average speed is 80 kilometers per hour. If a particle is moving along the x axis and is located at 10 meters at 2 seconds and at 12 meters at 4 seconds, then the average velocity in that particular time interval would be = (12-10)/(4-2 )= 5 m/s M/sec, cm/sec, ft/sec, km/h, miles/hr, mph, etc. M/sec, cm/sec, ft/sec, km/h, miles/hr, etc. The average distance traveled per hour the distance traveled divided by the time takenĪverage Velocity = Total displacement/time intervalĪverage Speed = Distance covered/time interval The average displacement traveled per hour The average speed of an object in an interval of time is the distance traveled by the object divided by the duration of the interval. The average velocity of an object moving through a displacement during a time interval. 18 miles / 1.5 hours = 12 miles/hour.Ĭomparison between Average Velocity and Average Speed: Hence, her average velocity is the total displacement divided by total time, i.e. So, Mary shifted 18 miles from her home to her office. Mary’s office is 18 miles away from her home. However, average velocity calculates the average displacement. Hence, Mary’s average speed is 21 miles/1.5 hours = 14 miles/hour. The total distance divided by total time is average speed. So, the total distance that Mary drives is 8 + 13 = 21 miles. So every morning, Mary drives 8 miles to the coffee shop, then another 13 miles to the office and it takes approximately one and a half hour to get to work. The distance between the coffee shop and Mary’s office is 13 miles. However, the distance between Mary’s home and the coffee shop is 8 miles. Imagine now, that the distance between Mary’s home and Mary’s office is 18 miles. So, Mary drives to the coffee shop, and then drives to work. However, she stops to buy coffee on the way there. While, these differences may seem minor, they have a major impact. Another difference between the two is the fact that average speed calculates the average distance traveled, whereas, average velocity calculates the average displacement. Velocity, on the other hand, is a vector quantity, which means that it has directions. The main difference is the fact that speed is a scalar quantity, which means that it has no directions. They sound exactly the same however, there are certain differences between the two. Whereas, the Average Speed denotes the total distance traveled over a certain amount of time. Average Velocity defines the total amount of distance from the starting point, which is also known as displacement, divided by the amount of time passed. The confusion mainly arises due to the fact that the terms denote something quite similar. Whereas, the Average Speed denotes the total distance traveled over a certain amount of time.Īverage Velocity and Average Speed are two terms that are often confused. Key difference: Average Velocity defines the total amount of distance from the starting point, which is also known as displacement, divided by the amount of time passed.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |