Question

A car is moving northeast at a velocity of 10 meters per second. Four seconds later it's going
30 meters per second. What was the car's average acceleration during this time?

Answer 1

Answer:

5 m/s^2

Explanation:

The initial velocity of the car (let it be "u") = 10 m/s

The final velocity of the car (let it be "v") = 30 m/s

The time taken to change the speeds (t) = 4 s

The formula for acceleration ( or average acceleration - a) = (v-u)/t

Now substitute the values in the formula:

a=(30 - 10)/4

a = 20/4

a = 5

Therefore, average acceleration of car is 5 m/s^2.

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