science
Grade-7
Easy
Question
Analyze the graphs given below and choose the correct option for them.
- (a) represents a non-uniformly accelerating body
- (b) represents a non-uniformly decelerating body
- The body in the graph (a) starts from rest. However, the body in the graph (b) comes to rest
- All of the above
Hint:
Slope of velocity-time graph shows acceleration.
The correct answer is: All of the above
Let's understand both graphs separately.
- Graph A: - This graph represents a non-uniformly accelerating motion of the body as the slope is positive and speed is changing unequally in unequal intervals of time. And the body started from rest as graph is starting from origin.
- Graph B: - This graph represents a non-uniformly decelerating motion of the body as the slope is negative and velocity of body is changing unequally in unequal intervals of time. And at the end body came to rest as the graph's end point is coinciding with X-axis.
Hence, all the above options are correct.
Related Questions to study
science
The velocity-time graph of a uniformly accelerating body is a ____.
The velocity-time graph of a uniformly accelerating body is a ____.
scienceGrade-7
science
Look at the position-time graph below. What is the kind of motion shown by section no.1 of the graph?
Look at the position-time graph below. What is the kind of motion shown by section no.1 of the graph?
scienceGrade-7
science
What does the steepness of a position-time graph indicate?
What does the steepness of a position-time graph indicate?
scienceGrade-7
science
What is the correct relation between the acceleration of A and B?
What is the correct relation between the acceleration of A and B?
scienceGrade-7
science
The steepness of a velocity-time graph indicates the ___ of a moving body.
The steepness of a velocity-time graph indicates the ___ of a moving body.
scienceGrade-7
science
The ___ the velocity-time graph, the greater the ___ of a moving body.
The ___ the velocity-time graph, the greater the ___ of a moving body.
scienceGrade-7
science
The position-time graph of a body at rest is a ___.
The position-time graph of a body at rest is a ___.
scienceGrade-7
science
The steepness of the position-time graph represents the ___.
The steepness of the position-time graph represents the ___.
scienceGrade-7
science
In a position-time graph, the ___ of an object is plotted against ___.
In a position-time graph, the ___ of an object is plotted against ___.
scienceGrade-7
science
A body moving at 2 m/s uniformly increases its velocity by 5 m/s every second. Its velocity after 30 s becomes ___ m/s.
A body moving at 2 m/s uniformly increases its velocity by 5 m/s every second. Its velocity after 30 s becomes ___ m/s.
scienceGrade-7
science
A ball is dropped from the top of the building reaches a speed of ___ m/s after 10 s.
A ball is dropped from the top of the building reaches a speed of ___ m/s after 10 s.
scienceGrade-7
science
The value of acceleration due to gravity is ____ m/s2.
The value 9.8ms-2 for acceleration due to gravity implies that for a freely falling body the velocity changes by 9.8ms-1 every second.
The value of acceleration due to gravity is ____ m/s2.
scienceGrade-7
The value 9.8ms-2 for acceleration due to gravity implies that for a freely falling body the velocity changes by 9.8ms-1 every second.
science
Naas notes the speedometer readings of his friend’s car the moment he started applying brakes until the car stopped. Later, he calculated the acceleration of the car and found it out to be ___.
Negative acceleration is also known as deceleration.
Naas notes the speedometer readings of his friend’s car the moment he started applying brakes until the car stopped. Later, he calculated the acceleration of the car and found it out to be ___.
scienceGrade-7
Negative acceleration is also known as deceleration.
science
A car moving at a velocity of 76 m/s decreases its velocity uniformly to 6 m/s in 10 s. Work out its acceleration with a proper sign.
Negative acceleration is also known as deceleration.
A car moving at a velocity of 76 m/s decreases its velocity uniformly to 6 m/s in 10 s. Work out its acceleration with a proper sign.
scienceGrade-7
Negative acceleration is also known as deceleration.
