Question

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An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. Which describes the acceleration?

negative acceleration of 4 m/s2
positive acceleration of 4 m/s2
positive acceleration of 9 m/s2
negative acceleration of 9 m/s2

Answer 1

4 m/s2 in negative acceleration

Step-by-step explanation:

From the question.

Acceleration= change in velocity ÷ time.

V1-V0÷time.

That is final velocity minus initial velocity divided by time.

25-65÷10.

-40/10=4m/s.

The acceleration is -4m/s.

The answer is 4m/s negative acceleration.

Step-by-step explanation:

Answer 2

Answer;

4 m/s2 in negative acceleration

Explanation:

From the question.

Acceleration= change in velocity ÷ time.

V1-V0÷time.

That is final velocity minus initial velocity divided by time.

25-65÷10.

-40/10=4m/s.

The acceleration is -4m/s.

The answer is 4m/s negative acceleration.