Atoy airplane is flying at a speed of 6 m/s with an acceleration of 0.3 m/s2.
how fast is it flying after 4 seconds?

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground. what is his gravitational potential energy above the ground?