If a car goes along a straight road heading east and speeds up from 45 ft/sec to 60. ft/sec in 5 sec, calculate the acceleration.

= 3-3 ft/sec 2 NESn/aW

Note: If the speed were given in miles per hour, and the time were given in minutes, you could change the minutes to a fraction of an hour and do the problem. The answer would be in miles/hr2.

To calculate acceleration, we can use the formula:

Acceleration = (final velocity - initial velocity) / time

Given that the initial velocity is 45 ft/sec, the final velocity is 60 ft/sec, and the time is 5 sec, we can plug in these values into the formula:

Acceleration = (60 ft/sec - 45 ft/sec) / 5 sec
= 15 ft/sec / 5 sec
= 3 ft/sec^2 (feet per second squared)

So, the acceleration of the car is 3 ft/sec^2 (feet per second squared).

Note: If the speed were given in miles per hour, and the time were given in minutes, you could convert the minutes to a fraction of an hour and use the same formula to calculate the acceleration. The answer would be in miles/hr^2 (miles per hour squared).

To calculate the acceleration, we can use the formula:

acceleration = (change in velocity) / (time)

The change in velocity is given as 60 ft/sec - 45 ft/sec = 15 ft/sec. The time is given as 5 seconds.

Plugging in these values into the formula, we get:

acceleration = (15 ft/sec) / (5 sec) = 3 ft/sec^2

So, the acceleration of the car is 3 ft/sec^2.