Your mass is 68.8 kg, and the sled s mass is 11.3 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 3.10 m/s. What will be your speed on the ice after jumping off? Question 8 options:   0.36 m/s   0.71 m/s   0.61 m/s   0.51 m/s

Please please answer both questions. I will really really upvote. Thanks

space a kg, including suit and oxygen tank. The tether line securing the astronaut to their spacecraft loses its attachment from the spacecraft while they are on a spacewalk. The astronaut is initially at rest with respect to the spacecraft, they then throw their 12.0 kg oxygen tank away from their spacecraft with a speed of 8.00 m/s in order to propel themselves back towards it. I) Calculate the maximum distance they can possibly be from the spacecraft and still return within 2.00 min (the amount of time the air in their helmet remains breathable). II) Which of Newton's law of motion explain best why this strategy works? (a) First (b) Second (c) Third

3

40 m- 11. The roller-coaster car shown passes a vertical height of 25 m on the second hill. Determine the velocity of the car, whose mass is 800. kg, at point 2 if it starts moving at 10.0 m/s at point 1 on a frictionless track. y=0 -25m-->

Question 4 Problem: An escalator is used to move exactly 8 Question 3 Problem: An escalator is used to move exactly 8 passengers per minute from the first floor of a department store to the second floor. The passengers per minute from the first floor of a department store to the second floor. The second floor is located 5.2 meters above the first second floor is located 5.20 meters above the floor. The average passenger's mass is 54.9 kg. Determine the power requirement of the first floor. The average passenger's mass is 54.9 kg. Determine the power requirement of the escalator in order to move this number of escalator in order to move this number of passengers in this amount of time. Use a value for g of 9.80 m/s?. passengers in this amount of time. Use a value for g of 9.80 m/s?. 4 x 10? watts а. 4 x 102 watts b. 3.7 х 102 watts а. b. 3.7 x 102 watts C. 3.73 x 10? watts С. с. 3.73 х 102 watts С. d. 3.730 x 102 watts d. 3.730 x 102 watts

QUESTION 8 Your mass is 94.1 kg, and the sled s mass is 20.1 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 3.45 m/s. What will be your speed on the ice after jumping off?   A 1.04 m/s   B 0.89 m/s   C 0.74 m/s   D 0.37 m/s

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