Question

If a object is running 16km/hrs speed they want to cover 100km. How many hours will the object will take to cover distance?

Answer 1

Solution:

Given,

• Speed of object = 16 km/h
• Distance need to travel = 100km

To find,

• Time taken to cover 100km

_____________________________

As per the question:

For 16km → time taken = 1 h

For 100km → time taken = ?

Let us assume time taken to travell 100km be t2

By cross-multiplying

→ t2 × 16 = 100 × 1

→ t2 = 100/16

→ t2 = 6.25 h

Hence , time taken to travell 100km = 6.25 h

★ Knowledge enhancer:

Kinematic equations

♦ 1st eq. : v = u + at

♦ 2nd eq. : v² - u² = 2as

♦ 3nd eq. : s = ut + 1/2 at²

Answer 2

Answer:-

Given:-

• Speed of the particle (v) = 16 km/h
• Distance it will cover (s) = 100 km

To Find:-

Time (in hr.) it will take.

_____________...

We know that,

t = s/v (Since s = vt)

So,

t = (100 km)/(16 km/h)

➵ t = 50 / (8 h)

➵ t = 25 / (4 h)

➵ t = 12.5 / (2 h)

➵ t = 6.25 h ...(Ans.)

GeoX's Brain Booster:-

Equations of kinematics:-

• v = u + at [since a = (v - u)/t]
• s = ut + ½at²
• v² - u² = 2as

where,

• v = Final Velocity,
• t = Time,
• u = Intital Velocity,
• a = Acceleration &
• s = Distance.