A dragster and driver together have mass 893.6 kg. The dragster, starting from rest, attains a speed of 26.3 m/s in 0.57 s . a) Find the average acceleration of the dragster during this time interval in m/s2. b)What is the size of the average force on the dragster during this time interval in N? c)Assume the driver has a mass of 75.7 kg . What horizontal force does the seat exert on the driver in N?

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”