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4 years ago

A train traveling at 50 miles per hour has to slow down to 10 miles per hour in 4 seconds. What is the acceleration

Physics

2 answers:

tester [92]4 years ago

7 0

Acceleration = (change in speed) / (time for the change)

Change in speed = (speed at the end) - (speed at the beginning)

Change in speed = (10 mph) - (50 mph) = -40 mph

Acceleration = (-40 mi/hr) / (4 sec)

<em>Acceleration = -10 mi/hr-sec</em>

To get a more comfortable, familiar unit for the answer . . .

Acceleration =

(-10 mile/hour-second) x (1,609.3 meter/mile) x (1 hour / 3,600 sec)

Acceleration = (-10 x 1,609.3 / 3,600) (mile-meter-hour / hour-sec-mile-sec)

<em>Acceleration = -4.47 m/s²</em>

elena-s [515]4 years ago

3 0

Answer:-10 miles per second

Explanation:

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