Over 4 seconds, a car's momentum decreases by 1000 kg m/s. How much force did it take to make this happen? Use the equation below to help you.
Question
Over 4 seconds, a car's momentum decreases by 1000 kg m/s. How much force did it take to make this happen? Use the equation below to help you.
Solution
To solve this problem, we need to use the formula for force, which is:
Force = change in momentum / time
Given in the problem, the change in momentum is -1000 kg m/s (it's negative because the momentum decreases), and the time is 4 seconds.
So, we substitute these values into the formula:
Force = -1000 kg m/s / 4 s = -250 N
Therefore, it took 250 Newtons of force to decrease the car's momentum by 1000 kg m/s over 4 seconds. The negative sign indicates that the force was applied in the opposite direction of the car's motion.
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