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Find the force that must be provided to lift a 49-N object with an acceleration of 9.8 m/s2 (g = 9.8 m/s2).
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- A 3.00-kg object is moving in a plane, with its x and y coordinates given by x = 5t2 1 and y = 3t3 + 2, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 2.00 s.A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?Mary applies a force of 77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.71 m/s2. There is a constant friction force present between the floor and the box. (a) What the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?
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- He continues on for a while until he encounters a 500. kg boulder blocking his way. He puffs up his chest, crouches a bit, and begins to push horizontally with a force of 2,205 N. The coefficient of friction between the ground and the boulder was 0.450. Was he able to move it out of the way?While two forces act on it, a particle is to move at the constant velocity = (3.58 m/s) -(-3.26 m/s). One of the forces is F1 = (1.88 N) + (-5.85 N). What is the other force? Number i + i j UnitsWhat net force is required to make a 15 kg box move at a constant speed of 2.0 m/s.
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