hiker throws a rock from ground A level at 11.3 m/s at an angle of 26° over a river that is 6.27 m wide. What height is the rock at when it reaches the other side of the river?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

If a star is moving toward earth, it is