3. Three forces, each of 10 N, act on the same object. What is the maximum total force they can exert on the object? The minimum total force?
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- 24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95 km/hr within a distance of 60 meters. What the direction and size of the force that acts on the truck? a. b. If the truck were carrying a load of 200 kg, what new force would be required to achieve the same acceleration?1. A ping-pong ball has a weight of 0.50 N. While in contact with a paddle the paddle exerts a force of 7.8 N at 29° above the horizontal. Determine the net force acting on the ball at this instant.60. An 8.0-kilogram block and a 2.0-kilogram block rest on a horizontal frictionless surface. When horizontal force F is applied to the 8.0-kilogram block, it accelerates at 5.0 meters per second east. If the same force was applied to the 2.0-kilogram block, the magnitude of the block's acceleration would be (1) 1.3 m/s2 (2) 2.5 m/s2 (3) 10. m/s2 (4) 20. m/s SHOW WORK, CIRCLE ANSWER, WRITE NEAT
- THREE FORCES, EACH OF 10 N, ACT ON THE SAME OBJECT. WHAT IS THE MAXIMUM TOTAL FORCE THEY CAN EXERT ON THE OBJECT? THE MINIMUM TOTAL FORCE?18. According to Newton's third law, every force is accompanied by an equal and opposite reaction force. The reason that these forces do not cancel each other is a. the action force acts for a longer time period b. the two forces are not always in the same direction c. one of the two forces is greater than the other d. the two forces act upon different objects; only forces on the same object can balance each other. e. . nonsense! They do cancel each other. Objects accelerate because of the presence of a third force Justify your answer:1.3 f a system is isolated: a. The velocities of all objects must sum to exactly zero. b. Sum of all the forces must be 3.14159 Newtons c. The vector sum of all external forces acting on the system must be zero. d. It will interact with the external environment.
- 7. If we know an object is moving at constant velocity, then we can be certain... the net force acting on the object is zero. the object is losing mass. the object is accelerating. there are no forces acting on the object.10. John observes a duck whose mass is 5.0 kg paddling due east on the Detroit river. The duck is exerting a force 0.30 N due east and John notes the river has a force of 0.10 N 43 degrees south of east. If the duck has an initial velocity 0.21 m/s east, what is the magnitude of displacement John would observe the duck undergo in 2.0 s? А. 0.81 m No answer is correct С. 0.52 m D. 0.57 m Е. 0.45 m B.