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One object exerts a force of magnitude F1 on another object and experiences a force of magnitude F2 in return. What is true for F1 and F2?
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- An object of mass m = 1.00 kg is observed to have an acceleration a with a magnitude of 10.0 m/s2 in a direction 60.0 east of north. Figure P4.29 shows a view of the object from above. The force F2 acting on the object has a magnitude of 5.00 N and is directed north. Determine the magnitude and direction of the one other horizontal force F1 acting on the object. Figure P4.29A block with mass m1 hangs from a rope that is extended over an ideal pulley and attached to a second block with mass m2 that sits on a ledge. The second block is also connected to a third block with mass m3 by a second rope that hangs over a second ideal pulley as shown in Figure P5.47. If the friction between the ledge and the second block is negligible, m1 = 3.00 kg, m2 = 5.00 kg, and m3 = 8.00 kg, find the magnitude of the tension in each rope and the acceleration of each block. FIGURE P5.47You push an object, initially at rest, across a frictionless floor with a constant force for a time interval t, resulting in a final speed of v for the object. You then repeat the experiment, but with a force that is twice as large. What time interval is now required to reach the same final speed v? (a) 4 t (b) 2 t (c) t (d) t/2 (e) t/4
- 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 821-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time?A 80.0 kg diver falls from rest into a swimming pool from a height of 5.50 m. It takes 1.84 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.
- A 945-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time? ( in kN eastward)A car of mass 1.2 103 kg is traveling east at a speed of 24 m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.3 s. What is the average horizontal force exerted on the car while it is braking?A 91.0 kg diver falls from rest into a swimming pool from a height of 6.1 m. It takes 1.58 s for the diver to stop after entering the water. Find the magnitude of the average net force exerted on the diver during that time.
- An electron is a subatomic particle (m accelerates from an initial velocity of +7.54 x 105 m/s to a final velocity of 2.22 x 106 m/s while traveling a distance of 0.0692 m. = 9.11 x 1031 kg) that is subject to electric forces. An electron moving in the +x direction The electron's acceleration is due to two electric forces parallel to the axis: F1 9.04 x 10-17 N, and F2, which points in the -x direction. Find the magnitudes of (a) the net force acting on the electron and (b) the electric force F2 F, F2 F, on with available attempts. (a) Number Units (b) Number UnitsA 78 kg bungee jumper is initially standing at rest on a bridge. After falling a distance 15 m, then how fast is the person moving? Assume that the force of the bungee cord acting on the person can be modeled as F = 354.6s + -5.2s3, where s is how far the person has fallen.A 1.5 kg object has velocity of V= 5j m/s at t-0. It is accelerated at a constant rate for 5 seconds after which it has a velocity of V, 6i+ 12j m/s. What is the magnitude of the resultant force acting on the object during this time interval? Option 1 Option 2 Option 3 Option 4 Option 5 3.8 N 3.2 N 2.8 N 4.3 N 4.6 N