A man does 4,495 J of work in the process of pushing his 2.80 x 10- kg truck from rest to a speed of v, over a distance of 26.5 m. Neglecting friction between truck and road, determine the following. (a) the speed v (in m/s) m/s (b) the horizontal force exerted on the truck (in N)
A man does 4,495 J of work in the process of pushing his 2.80 x 10- kg truck from rest to a speed of v, over a distance of 26.5 m. Neglecting friction between truck and road, determine the following. (a) the speed v (in m/s) m/s (b) the horizontal force exerted on the truck (in N)
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Transcribed Image Text:A man does 4,495 J of work in the process of pushing his 2.80 x 10- kg truck from rest to a speed of v, over a distance of 26.5 m. Neglecting friction between truck and road, determine the following.
(a) the speed v (in m/s)
m/s
(b) the horizontal force exerted on the truck (in N)
N
Transcribed Image Text:As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h.
rough patch
i50 cm
When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.0 cm that has a coefficient of kinetic
friction u, = 0.670.
Find h (in m) such that the block's speed after crossing the rough patch is 3.80 m/s. (Enter a number.)
m
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