Asled with a mass 53.0 kg is pulled along flat, snow-covered ground. the static friction coefficient is 0.30, and the kinetic friction coefficient is 0.10. (a) what does the sled weigh? 519.75245151792 n (b) what force will be needed to start the sled moving? n (c) what force is needed to keep the sled moving at a constant velocity? n (d) once moving, what total force must be applied to the sled to accelerate it at 2.6 m/s2? n

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station