1. [2/4 Points] DETAILS PREVIOUS ANSWERS SERPSE10 5.4.OP.006.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two forces F, and F , act on a 6.40-kg object. F1 = 40.0 N and F, = 14.0 N. 90.00 60.0 m m a b (a) Find the acceleration of the object for the configuration of forces shown in Figure (a). magnitude 6.62 m/s2 direction 19.3 . ( counterclockwise from F 1 ) (b) Find the acceleration of the object for the configuration of forces shown in Figure (b). magnitude 6.43 X You find the magnitude of a force in the same manner you find the magnitude of any other vector: first resolve each vector into components. m/s2 81.1601188 X direction Draw a careful picture of the sum of these two vectors. Can the angle of the sum be greater than 60? (counterclockwise from F 1) Need Help? Read It Master It Submit Answer2. [-I3 Points] - SERPSE10 5.4.0P.001.M|. ASK YOUR TEACHER PRACTICE ANOTHER A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 4.60-kg puck has a velocity of 1.40? m/s at one instant. Eight seconds later, its veloCIty is (6.00? + 6.03) m/s. (a) Assuming the rocket engine exerts a constant horizontal force, find the components of the force. (l i+ j) N (in) Find its magnitude. N Need Help? Submit Answer 4. [-I2 Points] - SERPSE1U 5.5.P.011.MI. ASK YOUR TEACHER PRACTICE ANOTHER An electron of mass 9.11 X 10'31 kg has an initial speed of 3.20 X 105 m/s. It travels In a straight line, and its speed Increases to 6.80 X 105 m/s in a distance of 4.00 cm. Assume its acceleration l5 constant. (a) Determine the magnitude of the force exerted on the electron. 4.10x10'k20 x Your answer cannot be understood or graded. More Information N (b) Compare this force (F) With the weight of the electron (F9), which we ignored. F F = 4.57x10A10 X Your answer cannot be understood or graded. More Information 9 Need Help? Submit Answer SERPSE1U 5.7.0P.015.MI. ASK YOUR TEACHER PRACTICE ANOTHER Assume the three blocks (n11 : 1.0 kg, m2 : 2.0 kg, and m3 : 4.0 kg) portrayed in the figure below move on a frictionless surface and a force F: 46 N acts as shown on the 4.0 kg block. 6. [-l5 Points] m 1 m 3 (D (3) Determine the acceleration given this system (In m/s2 to the right). m/s2 (to the right) (b) Determine the tension in the cord connecting the 4.0 kg and the 1.0 kg blocks (in N). N (c) Determine the force exerted by the 1.0 kg block on the 2.0 kg block (in N). N (d) What If? How would your answers to parts (a) and (b) of this problem change if the 2.0 kg block was now stacked on top of the 1.0 kg block? Assume that the 2.0 kg block sticks to and does not slide on the 1.0 kg block when the system is accelerated. (Enter the acceleration in m/s2 to the right and the tension in N.) acceleration m/s2 (to the right) tension N Ncml Help? audit Hum Submit