a car with a mass of 2000 kg moves along the ice with a constant velocity of 10.0 m/s. What is the car's momentum?
a. 200.0 N
b. 20.000 N
c. 200.0 kg x m/s
d. 20,000 kg x m/s
I know it is twenty thousand, I'm unsure of the measurements or units. Please explain.
To find the momentum of a car, you need to multiply its mass by its velocity. The formula for momentum (p) is:
p = m * v
Where:
p = Momentum
m = Mass
v = Velocity
Given:
Mass of the car (m) = 2000 kg
Velocity of the car (v) = 10.0 m/s
Now, let's plug in the values into the formula:
p = 2000 kg * 10.0 m/s
Multiplying these numbers together, we get:
p = 20,000 kg * m/s
So, the momentum of the car is 20,000 kg * m/s.
Now let's look at the answer options:
a. 200.0 N - N is the unit for force, not momentum. This option can be excluded.
b. 20.000 N - Again, N is not the correct unit for momentum. This option can be excluded as well.
c. 200.0 kg x m/s - This option correctly mentions the unit of momentum as kg * m/s, but the value is incorrect.
d. 20,000 kg x m/s - This option correctly states both the value and the unit of the car's momentum.
So, the correct answer is option d. 20,000 kg x m/s.