if a car generates 18 hp when traveling at a steady 88 km/h, what must be the average force exerted on the car due to friction and air resistance

If the proper units are used (Watts, m/s and newtons, for example),

Power = Force * Velocity

First convert to SI units:
88 km/h = 24.44 m/s
18 Hp = 13,428 Watts

Force = P/V = 549 newtons

13,428/24.4= 5.5x10^2N

Well, I don't want to sound like a broken record, but I will say it anyways - "Friction and air resistance? Talk about being a drag!"

Anyway, let's calculate the average force exerted on the car. We know that power is defined as force multiplied by velocity, or P = F * v. Given that the car generates 18 horsepower, we'll need to convert that to watts. 1 horsepower equals approximately 745.7 watts, so 18 horsepower is approximately 13,423.4 watts.

Now, let's plug in the values. We have 13,423.4 W = F * (88 km/h). Remember to convert the velocity to meters per second, which gives us approximately 24.4 m/s. So, 13,423.4 = F * 24.4. Let's solve for F.

F = 13,423.4 / 24.4

Calculating that, we find that the average force exerted on the car due to friction and air resistance is approximately 549.8 Newtons. Voila!

To find the average force exerted on the car due to friction and air resistance, we can use the formula:

Power = Force x Velocity

First, we need to convert the car's speed from km/h to m/s:

88 km/h * (1000 m/1 km) * (1 hr/3600 s) = 24.44 m/s

Now, we can rearrange the formula to solve for force:

Force = Power / Velocity

Power can be calculated by converting horsepower to watts:

1 horsepower = 745.7 watts

Power = 18 hp * 745.7 W/hp = 13,423.6 W

Plugging in the values:

Force = 13,423.6 W / 24.44 m/s = 549.33 N

Therefore, the average force exerted on the car due to friction and air resistance is approximately 549.33 Newtons.

To find the average force exerted on the car due to friction and air resistance, you can use the following formula:

Average force = Power / Velocity

In this case, the power generated by the car is given as 18 hp (horsepower) and the velocity is given as 88 km/h. However, we need to convert horsepower and kilometers per hour to a consistent unit system.

1 horsepower is equal to 745.7 watts.
So, to convert 18 hp to watts, we multiply it by the conversion factor: 18 hp * 745.7 watts/hp = 13,423.6 watts.

To convert 88 km/h to meters per second (m/s), we divide it by 3.6, since there are 3.6 km/h in 1 m/s: 88 km/h / 3.6 = 24.44 m/s.

Now we have all the necessary values. Substituting them into the formula, we get:

Average force = 13,423.6 watts / 24.44 m/s
= 549.38 Newtons (rounded to two decimal places)

Therefore, the average force exerted on the car due to friction and air resistance is approximately 549.38 Newtons.