The top of the trajectory is the point where it changes from rising to falling. At that exact instant, its vertical speed is zero.
Answer:
the car with the hay should slow to 16m/s if the bale of hay is dropped into it.
Answer:
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<em>The lead shot-filled can experiences a greater force due to gravity because it contains more mass.</em>
Explanation:
The gravitational attractive force that acts on two different bodies on Earth depends on the body's masses. The greater the mass, the stronger the force of gravity acts on the body. The smaller the mass, the weaker the force of gravity acts on the body.
The can with the lead shot in it has a greater mass than that of the can that is filled with feathers. Therefore,<em> the can with the lead shot will experience a greater force due to gravitational attraction of the Earth</em> than that of the can that is filled with feathers.