A 50,000. Kg barge moving at 4 0 m/s in the water is being slowed to test by a ture boat that can push on the barge in the opposite direction that it is moving with an average forte of 300.0 Newtons
How long will it take the tug boat to stop the barge?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

True or false graphs must include scales that increase by the same amount

Carbon 14 is a naturally occurring stable