5. If a 180 kg race car starts a race from rest and gets up to a speed of 125 m/s in 18 s, what is the

force applied by the engine of the racecar?

I

1250N

Explanation:

Th force applied by the engine of this race car can be calculated using the formula: F = m * a

Where, F = force in Newtons (N)

m = mass in kilograms

a = acceleration in m/s^2

The mass of the race car is known (180kg). To find the acceleration (a), we divide the speed or velocity by the time taken i. e. a = v/t

Hence, a = 125/18

a = 6.9444m/s^2.

We can then find the force (F) by saying F = 180 * 6.944444

F = 1250Newtons.