Question

Please help! Is my work correct?

If the velocity of an object changes from 65 m/s to 98m/s during a time interval of 12 s, what is the acceleration of the object?

A. 33 m/s
B. 5.42 m/s
C. 2.75 m/s
D. 13.58 m/s

Answer 1

I think that C is the answer

Answer 2

\[a=\frac{ 98-65 }{ 12 } = \frac{ 33 }{ 12 } =2.75\]

Answer 3

Is that correct?

Answer 4

Yes you are :D

Answer 5

@Andromeda992 You're correct

Answer 6

Thank y'all

Answer 7

*thanks

Answer 8

You are correct.

Acceleration is the rate of change of speed.

\(a = \dfrac{change~in~speed}{time} =\)

\(\Large = \dfrac{98 \frac{m}{s} -65 \frac{m}{s} }{12~s} \)

\(\Large = 2.75 \dfrac{m}{s^2} \)

Notice the unit of acceleration is \(\dfrac{m}{s^2} \), not \(\dfrac{m}{s} \).

Answer 9

Thanks

Answer 10

You're welcome.