A piece of balsa wood, a piece of maple, and a ping-pong ball are released under water. Density of a piece of maple is 0.692 g/cm3. What is its initial acceleration?

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader