Need help for acceleration question (1 Viewer)

[BlueGas]

The solution is here but I don't understand how they got the answer because there's no "proper" working out.

 

[InteGrand]

The solution is here but I don't understand how they got the answer because there's no "proper" working out.

Just differentiate the function for velocity with respect to time to get the acceleration as a function of time, then sub. in t = 1 to get the required answer.

 

[Flop21]

With these types of questions just remember f(x) is the displacement, f'(x) is the velocity, f''(x) is the acceleration. So they've given you the velocity (which is f'(x) ), so you need to differentiate to get the acceleration ( f''(x) ).

Then sub t=1 into it.

You usually leave it with the e in the answer, unless it asks you to calculate it to a certain decimal place or something.

 

[BlueGas]

Just differentiate the function for velocity with respect to time to get the acceleration as a function of time, then sub. in t = 1 to get the required answer.

With these types of questions just remember f(x) is the displacement, f'(x) is the velocity, f''(x) is the acceleration. So they've given you the velocity (which is f'(x) ), so you need to differentiate to get the acceleration ( f''(x) ).

Then sub t=1 into it.

You usually leave it with the e in the answer, unless it asks you to calculate it to a certain decimal place or something.

Yeah I done that, I had my answer in decimal places and I got confused because I didn't find my answer in the teacher's answer section. It looks like they left the equation as is and didn't calculate the answer on the calculator.

 

[InteGrand]

With these types of questions just remember f(x) is the displacement, f'(x) is the velocity, f''(x) is the acceleration. So they've given you the velocity (which is f'(x) ), so you need to differentiate to get the acceleration ( f''(x) ).

Then sub t=1 into it.

You usually leave it with the e in the answer, unless it asks you to calculate it to a certain decimal place or something.

 

[InteGrand]

Yeah I done that, I had my answer in decimal places and I got confused because I didn't find my answer in the teacher's answer section. It looks like they left the equation as is and didn't calculate the answer on the calculator.

You could type in the teacher's exact answer to your calculator and see if it matched yours. But wouldn't you have arrived at the teacher's exact answer in the process of getting your approximate answer anyway?

 

[BlueGas]

You could type in the teacher's exact answer to your calculator and see if it matched yours. But wouldn't you have arrived at the teacher's exact answer in the process of getting your approximate answer anyway?

Yeah I got the same equation as the teacher's answers and the answer is the same but I just got confused when I didn't see my answer.