What is the net force needed to accelerate a rocket sled to 1600 km/hr in 1.8 s?

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To determine the net force required to accelerate a rocket sled to 1600 km/hr in 1.8 seconds, the correct approach involves first calculating the acceleration. The sled's mass is 500 kg, and the velocity must be converted from km/hr to m/s for accurate calculations. The formula F = ma applies, where 'a' is derived from the change in velocity over time. After finding the acceleration, the net force can be calculated using the mass of the sled. Proper unit conversion and understanding of acceleration are crucial for obtaining the correct answer.
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"An experimental rocket sled can be accelerated at a constant rate from rest to 1600 km/hr in 1.8 s. What is the magnitude of the required net force if the sled has a mass of 500 kg?"

I know I have to use
[sum of the] F = ma

and i was trying
= 500 x 1600,
but I'm sure there's something else I have to do to get the right answer, since this isn't working..
 
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Look again at the definition of acceleration. You have used velocity in place of acceleration. Be careful with your units. km/hr is not m/s.
 
If you are having trouble, try solving it in terms of kinematics first. After you find the acceleration, then you can do what you did.
 
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