A 1.0 kg object has a velocity of 5.0f m/s at t = 0. A constant resultant force of (3.0î + 4.0j ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0 s interval? A B C E 9.8m/s 17.7m/s 9.2 m/s 15.0 m/s 16.3 m/s Lütfen birini seçin: O A O B ос O D
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- A 0.1 kg ball is launched from a vertical cannon, 0.7 m high and 0.05 m wide. The cannon exerts a 146 N force on the ball for a period of 0.03 s. What is the final height ofthe ball?Can you please help me with this question please? Thank you so much!Fx (N) 15 10- 5 0 0 1 Donal filanten, ing shy Pay 2 3 -x (m) A 537 g particle moving along the x-axis experiences the force shown in the diagram. The particle's velocity is 5.40 m/s at x = 0 m. What is its velocity (in m/s) at x = 1 m? Submit Answer Tries 0/10 What is its velocity (in m/s) at x = 2 m? Submit Answer Tries 0/10 What is its velocity (in m/s) at x = 3 m? Submit Answer Tries 0/10
- A 47 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backwards with a velocity of -1.1 m/s. Her hands are in contact with the wall for 1 seconds. Ignoring friction and wind resistance, find the average force she exerts on the wall? FaverageA 1.0 kg object has a velocity of 5.0f m/s at t = 0. A constant resultant force of (3.0î + 4.0f ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0 s interval? A B D E 9.8m/s 17.7m/s 9.2 m/s 15.0 m/s 16.3 m/s Lütfen birini seçin: O A O B O C O D O EThe only force acting on a 4.5 kg body as it moves along the positive x axis has an x component Fx = -6x N, where x is in meters. The velocity of the body at x = 1.9 m is 8.2 m/s. (a) What is the velocity of the body at x = 4.5 m? (b) At what positive value of x will the body have a velocity of 5.9 m/s?
- The only force acting on a 3.6 kg body as it moves along the positive x axis has an x component Fx = - 5x N, where x is in meters. The velocity of the body at x = 1.8 m is 9.0 m/s. (a) What is the velocity of the body at x = 4.1 m? (b) At what positive value of x will the body have a velocity of 2.5 m/s?Figure P7.44 45. Review. Two constant forces act on an object of mass m = QIC 5.00 kg moving in the xy plane as shown in Figure P7.45. Force F, is 25.0 N at 35.0°, and force F, is 42.0 N at 150°. At time t = 0, the object is at the origin and has velocity (4.00î + 2.50j) m/s. (a) Express the two forces in unit-vector notation. Use unit-vector notation for your other answers. (b) Find the total force exerted on the object. (c) Find the object's acceleration. Now, considering the instant t = 3.00 s, find (d) velocity, (e) its position, its kinetic energy the object's (f) from mv, and (g) its F2 F kinetic from 150° energy mu + EF · A. (h) What conclusion can you draw by comparing the answers to parts (f) and (g)? 35.0° m Figure P7.45answer Q 5
- A 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown in the figure. What are the object’s speed and direction after the force ends? Express your answer to two significant figures and include the appropriate units. Enter positive value if the speed is directed to the right and negative value if the speed is directed to the left.rough surfice Smath swace leeeeed 2.50m he 3.00m E; Ei + WNc A 34.2 kg block slides with a velocity of 10.22 m/s to the right on a frictionless surface (as shown in the figure above). The block slides up a slope to a height of 3.00 m and then slides across a 2.50 m long rough surface with a coefficient of kinetic friction equal to 0.325. The block continues to travel to the right and bumps into a massless spring with a spring constant (k) equal to 2320 N/m. a) How much does the spring get compressed by the block with respect to its equilibrium length? Please answer with a positive number in units of metres, with 3 sig figs. Start with conservation of energy: E, = E; + WNC , and show all steps. b) What is the potential energy stored by the spring when the mass comes to a stop? Please show the symbolic equation and then "plug in the numbers" to give a numerical answer in units of joules with 3 sig figs. c) What happens to the potential energy stored in the spring after the block stops…A 10 g rifle bullet is fired onto a 2 kg block of wood hanging at rest from a string attached to the ceiling. The bullet embeds onto the wood which is observed to rise a maximum height of 0.25 m. The initial velocity of the bullet is about O Vo a. 222 m/s O b. 2.21 m/s O c. 4.92 m/s O d. 444 m/s B 0 8 B