Two objects (m₁ = 4.85 kg and m₂ = 2.80 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.85-kg object is released from rest at a point h = 4.00 m above the table. m₁ Ⓡ (a) Determine the speed of each object when the two pass each other. m/s (b) Determine the speed of each object at the moment the 4.85-kg object hits the table. m/s (c) How much higher does the 2.80-kg object travel after the 4.85-kg object hits the table? m

A student releases a 3.9kg cart from the top of ramp and starts a stopwatch. The length from the front of the cart to the end of the ramp and the distance from the end of the ramp to the stopper are shown. Neglect backwards friction and drag and assume the cart does not lose speed transitioning from the ramp to the floor. What is the cart's acceleration on the ramp? unit | (magnitude) What is the cart's acceleration on the floor? 130cm unit (magnitude) How long does the cart take to reach the end of the ramp? 5° 200cm unit (timed from the release) How fast is the cart traveling as it hits the stopper? unit How long does the cart take to reach the stopper? unit (timed from the release) cannot be detern check answers challenge ne Calculator ound = 343m/s cant figures Rain to stop e here to search ACC t;320

A world-class sprinter running a 100 m dash was clocked at 5.4 m/s 1.0 s after starting running and at 9.8 m/s 1.5 s later. Part A Determine the ratio of his output powers in these time intervals. Po to 1 P1 to 2.5 15 ΑΣΦ ?

Yolanda is at the firing range practicing how to shoot a gun. A 12 g bullet is fired from her gun and moves vertically upwards at a velocity of 950m/s and strikes a 2kg brick which is originally at rest, as shown in the picture below. If the bullet emerges from the brick at a speed of 290m/s, help Yolanda figure out; 1. What is the The max height to which the brick rises ? 2. What is The increase in the internal energy of the bullet-brick system? 290 m/s 950 m/s

2.2. Two objects, A and B are treated as a single system. The table to the right shows some of the properties of each object at time t = 0.0 s. Use the information in the table to calculate А B color green orange 120 kg 85 kg mass -35 m the following at time t = 0.0 s: position 25 m (a) the total mass of the system (b) the total kinetic energy of the system (c) the total momentum of the system -15 m/s velocity 15 m/s temperature 15°C 25 °C (d) the position and the velocity of the cen- ter of mass of the system

1. A 32.00kg child runs with a speed of 6.00m and jumps onto a 20.00kg sled initially at rest on a flat bed of snow (no friction). What is the resultant speed of the child and sled after the child is atop the sled? S m S 2. The child-sled combo travel at velocity 12.00 and collide with a large snow bank, coming to rest after a 0.37s collision. What is the magnitude of the average force exerted on the child-sled combo by the snow bank during the collision? O 1037.84 N 518.59 N 1686.49 N 648.65 N m S

段階的に解決し、 人工知能を使用せず、 優れた仕事を行います ご支援ありがとうございました SOLVE STEP BY STEP IN DIGITAL FORMAT DON'T USE AI | DON'T USE AI | DON'T USE AI | DON'T USE AI | A car of mass 1600 kg starts from rest on a level road and reaches a speed of 80 km/h in 33 s. a) What is the kinetic energy of the car at the end of 33 s? b) What is the average net power developed by the car during the 33 s interval? c) What is the instantaneous power at the end of the 33 s interval assuming that the acceleration was constant?