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Accelaration

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statistics

by Dr. Osama M. Khaled — last modified 2022-07-19T04:22:32+00:00

Gaining speed

Questions #: 6

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Pass Score: 80.0%

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Acceleration is

The change in speed divided by the time it takes to make the change

The change in distance divided by the speed it makes to cover that distance

The change in time divided by the speed

The change in time divided by distance

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Deceleration is the change in speed negatively but still referred to as acceleration in physics

True

False

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Given v0 is initial speed of an object, v1 is object speed after time t, then acceleration formula is

(v0-v1)/t

t/(v0-v1)

t/(v1-v0)

(v1-v0)/t

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What is the calculated acceleration

If a car speeds up from 50 km/h to 80 km/h in 10 seconds. What is its acceleration?

2 km/h per second

3 km/h per second

3 km/h

5 km/h per second

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What does the following acceleration measure unit mean

m/s²

meter per second per second

meter per second

meter per double second

It is not a valid measure unit in acceleration

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What is the car speed after 9 seconds

You are doing a drive test for a new car. You started the car from rest and accelerated at the rate of 6 km/hr/s. What is the speed of the car after 9 seconds?

50 km/hr

54 km/hr

15 km/hr

60 km/hr

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