You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1460 N will move with speed 2.0 m/s at the top of a ramp that slopes downward at an angle 22.0 ∘. The ramp will exert a 546 N force of kinetic friction on each crate, and the maximum force of static friction also has this value. At the bottom of the ramp, each crate will come to rest after compressing a spring a distance x. Each crate will move a total distance of 7.8 m along the ramp; this distance includes x. Once stopped, a crate must not rebound back up the ramp. Required:
Calculate the force constant of the spring that will be needed in order to meet the design criteria.

we need to know the time interval during which the force acts. impulse of force = momentum change

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

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answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;