SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A distance-time graph indicates that an object moves 50 m in 6 s and then remains at rest for 4 s. What is the average speed of the object?
|
|
17 m/s
|
|
|
5 m/s
|
|
|
50 m/s
|
|
|
8 m/s
|
Explanation:
Detailed explanation-1: -The speed represented by a straight line on a distance–time graph equals the gradient of the graph. The gradient of a distance–time graph is the change in distance divided by the change in time. This can be written as = , where is the speed, is the change in distance, and is the change in time.
Detailed explanation-2: -The distance-time graph of an object at rest is a straight line parallel to the x-axis.
Detailed explanation-3: -Hence, the average speed of the object is 5.33m/s.
Detailed explanation-4: -Detailed Solution The average speed of the the object is 4.57 m/s.
There is 1 question to complete.