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two horses are pulling a 325 kg wagon, initially at rest. The horses exert 250 N and 178 N forward forces, respectively. Ignoring friction,
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Answer:
AFter 3.5 s, the wagon is moving at:
Explanation:
Let’s start by finding first the net force on the wagon, and from there the wagon’s acceleration (using Newton’s 2nd Law):
Net force = 250 N + 178 N = 428 N
Therefore, the acceleration from Newton’s 2nd Law is:
So now we apply this acceleration to the kinematic expression for velocity in an object moving under constant acceleration: