Question Video: Solving Word Problems Involving Direct Proportions | Nagwa Question Video: Solving Word Problems Involving Direct Proportions | Nagwa

# Question Video: Solving Word Problems Involving Direct Proportions Mathematics • Third Year of Preparatory School

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The velocity, π£, of an object in m/s is directly proportional to the time, π‘, in seconds. This relationship can be expressed in the equation π£ = 9.8π‘. Find the value of π‘ when π£ = 637 m/s.

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### Video Transcript

The velocity π£ of an object in metres per second is directly proportional to the time π‘ in seconds. This relationship can be expressed in the equation π£ equals 9.8π‘. Find the value of π‘ when π£ equals 637 metres per second.

So hereβs our equation. And weβre to find the value of π‘ when π£ is 637 metres per second. So we can replace π£ with 637. And now we can solve for π‘. So we need to divide both sides by 9.8. So 65 is equal to π‘. Therefore, when the velocity is equal to 637 metres per second, the time is 65 seconds.

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