What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.
momentum = M*V = (W/g)*V
where W is the weight, in newtons (N), and g = 9.81 m/s^2.
(1555/9.81)*23 = ___ kg m/s
Is the answer 3645.77?
Thanks for your help, btw :)
Yes, that is correct
To find the magnitude of the momentum of a car, we can use the formula:
Momentum (p) = mass (m) x velocity (v)
First, we need to find the mass of the car. In this case, we are given the weight of the car, which is 1,555 N. Weight is equal to the mass multiplied by the acceleration due to gravity (9.8 m/s^2). So we can calculate the mass (m) as:
Mass (m) = Weight (W) / Acceleration due to gravity (g)
Mass (m) = 1,555 N / 9.8 m/s^2
Using a calculator, we find that the mass of the car is approximately 158.67 kg (rounded to two decimal places).
Now, we have the mass (m) and the velocity (v) of the car, so we can calculate the momentum (p) using the formula mentioned earlier:
Momentum (p) = mass (m) x velocity (v)
Momentum (p) = 158.67 kg x 23 m/s
Using a calculator, we find that the magnitude of the momentum of the car is approximately 3,646.41 kg m/s (rounded to two decimal places).