Question

a tennis ball was observed to travel at speed at the speed of 96 miles per hour. calculate the speed of ball in SI units. given that 1mile=1.6km​

Answer 1

Hey mate here is your answer

1 mile = 1 609.344 meters 

1 hour = 3600 seconds 

95 miles/hr = 95 * 1609.344m /3600 seconds 

= 42.4688 m/second

Answer 2

The speed of ball in SI units is, 42.67 m/s

Explanation :

Speed : Speed is defined as the distance traveled by an object with respect to the time taken. It is a scalar quantity that means it tell us about the magnitude of an object not direction.

The SI unit of speed is, meter per second or, m/s

Conversions used:

1 mile = 1.6 km

1 km = 1000 m

and,

1 hr = 3600 s

As we are given that the speed of ball is, 96 miles per hour. Now we to convert it into m/s.

$96mile/hr=\frac{1.6km}{1mile}\times \frac{1000m}{1km}\times \frac{1hr}{3600s}$

$96mile/hr=42.67m/s$

Thus, the speed of ball in SI units is, 42.67 m/s

Learn more about : unit conversions

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