Question

Question 16 of 20
A car was driven from Point X to Point Y. It was driven at a speed of 35 m/s for the first 3 hours 20 minutes and at a speed of 23.75 m/s for
the last 5 hours 0 minutes. What is the average speed of the car in kilometer per hour?
93.7 km/h
128.2 km/h
O 86.4 km/h
0 100.5 km/h
0 132.3 km/h
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Instruction​

Answer 1

Answer:

was driven at a speed of 35 m/s for the first 3 hours 20 minutes and at a speed of 23.75 m/s for

the last 5 hours 0 minutes. What is the average speed of the car in kilometer per hour?

93.7 km/h

128.2 km/h

O 86.4 km/h

0 100.5 km/h

0 132.3 km/h

Mark for Review

Answer 2

Concept :

Velocity, as opposed to speed, refers to the pace and orientation of an object's mobility as it moves down a path. In other words, whereas velocity is a vector, speed is a scalar quantity. One of these quantifiable factors that accounts for the ratio of a moving object's distance travelled to its duration of journey is speed.

Given:

A car was driven from Point X to Point Y. It was driven at a speed of $35 m/s$ for the first $3 hours 20 minutes$ and at a speed of $23.75 m/s$ for the last $5 hours 0 minutes$.

Find:

The average speed of the car in kilometer per hour

Solution:

According to the problem,

It was driven at a speed of $35 m/s$ for the first $3 hours 20 minutes$

The speed in $140 minutes$ is = $0.81 km/h$

At a speed of $23.75 m/s$ for the last $5 hours 0 minutes$.

The speed is $0.85 km/h$

So, the average speed is $0. 86 km/h$

Hence the average speed is $0. 86 km/h$.

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