A rocket was flying at 50 [m/s]. Then they fire up the engines and it accelerates at 4 [m/s/s]. How much time does it take for the rocket to reach a final speed of 80 [m/s]?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 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. a) what is the block's initial mechanical energy? 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.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Which explanation most accurately describes convection within the ocean