A spaceship is descending to the surface of Mars where g= 4 m/sec. The spaceship is initially 80 m above the planet's surface and is descending downward at 50 m/sec. The mass of the spaceship is 2500 kg. The spaceship will land on the surface with a final velocity of 0. Our goal s to find the upward thrust force on the spaceship to make this happen. a) Find the deceleration of the rocket. b) Show the net force. d) Find the thrust force on the rocket?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.