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- Check Your Understanding The soccer player stops after completing the play described above, but now notices that the ball is in position to be stolen. If she now experiences a force of 126 N attempts to steal the ball, which is 2.00 m away from her, how long will it take her to get to the ball?Consider Figure 5.28. The driver attempts to get the car out of the mud by exerting a perpendicular force of 610.0 N, and the distance she pushes in the middle of the rope is 1.00 m while she stands 6.00 m away from the car on the left and 6.00 m away from the tree on the right. What is the tension Tin the rope, and how do you find the answer?Bbch A hes a mass of 7kp. Statıc ond khe tic M; =3,4 frictoa coefficients of He inclined surface ore 0.4 and o1, respectively a- Determine mnimuna 9 such thet block storts to sude when initrolly ot rest and released, b-Find its acceleration when it storts to slide O Sketch grophs. a Vo = 0 t い
- 5. A crate with a mass of 30 kg rests on a floor. On top of the crate stands a 45-kg girl. What is the normal force exerted on the crate by the floor? [Ans 6. A person stens hosinontay off the Tool of a single-story house that is 3.1 m high. When his feet hit the his knees al to a OEL OYCT this distance? stonA 51.5-kg swimmer with an initial speed of 1.25 m>s decides tocoast until she comes to rest. If she slows with constant acceleration and stops after coasting 2.20 m, what was the force exerted onher by the water?A 70 kg runner has a vertical acceleration ay of 13.5 m/s2, the vertical reaction force Ry that caused this acceleration is:
- U) Wildl iS tne timuSt TUrte Ul the nuciedi engine III NEWLUIS? Problem 4) A tesla model X electric vehicle is driving from Boston to Lenox on 195, on a straight section of the highway, no traffic and perfect weather at 70 miles/per hour. It has a perfectly constant speed. Can you say it has no forces acting on it since there is no acceleration?A stone w/ mass 40 kg SHS at bottom of bucket. A String of length .om is attached to bucket and the whole thong maes m crces/ sped 4,6 mLS. What os the magnitude af the force the Stone Caerts n the buket at the lasest pant of trajectory?The same rocket sled drawn is deceleratedat a rate of 196 m/s2. What force is necessary to producethis deceleration? Assume that the rockets are off. The massof the system is 2100 kg.
- 400ky is gove ve eEE An object of mase acceleration exerted. object of Mass of 20M5:2 Find the for ce the okjeck(d) When a = 4 m/s (towards the ground) w m(g-a) = 50 (10 - 4) = 500- 200 = 300 N oune %3D The rope will not break. The re The A ha Exercise 16.5 1. (a) State Newton's third law of motion. (b) Using examples, differentiate betweer action and reaction forces. 2. A driver jumps from a plane on an air cushion His speed is 24 m/s. The average force of the cushion on the body while he is being stopped is 9 400 N. If his mass is 70 kg, calculate the distance he will sink into the cushion. in 3. A man standing in a lift holds a spring balanc with a load of 5 kg suspended from it. What is the reading on the spring if the lift descending with an acceleration of 3.8 m/s? pplications of Newton's third w ome prastica situationA 1500 kg car moving at 20 km/h is accelerated ata constant rate of 4 m/s2up to a speed of 75 km/h.What are the force and total time required?