A ball of mass 3 kg is moving to the right with a velocity of 4 m/s when it strikes an 8 kg green block
also moving to the right at 2 m/s and stuck together.
Calculate the velocity of the ball and the block
together.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

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