4. The penguin is the moving to the right in a straight line over a frictionless

Question

4. The penguin is the moving to the right in a straight line over a frictionless patch of ice. A continue to move to the right, with its speed increasing with time B) on the penguin is also directed to the right. The penguin will A) continue to move to the right, with its speed decreasing with time continue to move to the right with a constant speed. D) stop and then begin moving to the left. E) stop and stay at rest ne Eas in an 800 kg hot air balloon keeps the balloon aloft by exerting a buoyant force of Fe - 9000 N on the balloon. Which of the following represents the correct free body diegram of the balloon (Fx is the normal force and Fe is the weight)? B) t& C& D) Cc) Cs E) Page 2 of 8

Explanation / Answer

4. (A) continue moving to right , with its speed increasing with time.

According to Newton's 2nd law, whenever a force is applied to a body , it accelerates in the applied direction, here, its initial veocity is also in same direction as force .so, its speed will be increasing with time.

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