A man is on a cart moving 30m/s. He throws a ball exactly horizontally that travels at 15m/s in the same direction the cart is moving. What is the overall speed of the ball?

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The softest and hardest minerals are: softest hardest

Which governments provide garbage collection services to homes and businesses