A motorcyle goes from 30kmhr to 9kmhr in 2 s what is its acceleration?
The motorcycle averages a negative 10.5 kmph acceleration. That is, the bike decelerates from 30 kmph to 9 kmph in 2 seconds. That's a change of 21 kmph over a period of 2 seconds, and that change is negative. The 21 kmph over a period of 2 seconds represents a 10.5 kmph change every second. Note that acceleration is a vector quantity. It has both magnitude and direction. We "fudged" here and assigned a "direction" based on the direction is it traveling. It's not a biggie, but do not make the mistake of leaving off a vector when considering a velocity (which is speed plus a direction vector) or acceleration, like in this problem.
What is the relationship of acceleration and mass where driving force is constant under newton's second law of motion?
For constant force the relationship of mass and acceleration is an Hyperbolic relationship. This means the product of mass and acceleration is a constant and as mass goes up the acceleration goes down and vice versa. In other words the mass and acceleration are inversely related; F=ma=k; m=k/a and a=k/m.
As an object goes round in a circular path, then its velocity will along the tangent at that instant. But centripetal acceleration is normal to that tangent and so along the radius of curvature. As acceleration is perpendicular to the velocity, the direction aspect is ever changing and so the object goes round the circular path.
What happens to the acceleration of a simple pendulum as it approaches the lowest point of its swing?
What is the acceleration of a car that goes from 32 meters per second to 96 meters per second in 8 seconds?
What is the acceleration of a car that goes form 0 miles per second to 25 miles per second in 3 seconds?
Why does the acceleration of an object rolled down an incline increase as the angle of incline increases?
The contribution of the acceleration of gravity in the direction of motion increases as the angle of the incline increases. Or in other words, as the angle between the direction of motion and the force of gravity goes to zero, the acceleration of the object goes to the gravitational acceleration. a = g cos(theta) Where theta is the angle between the direction of motion and verticle, which is in fact (theta = 90 - angle…
Discuss acceleration by providing at least one example and explaining why it would be considered scalar or vector?
When we ride on a motor cycle we turn the throttle and the bike's speed goes on increasing. This is positive acceleration. Now we switch off the motor. The bike comes to rest after travelling some distance. This is due to negative acceleration due to frictional force between the tyre and the floor. In this case acceleration is in opposite direction to the direction of motion of the bike. Hence acceleration becomes a vector.